diff --git a/.dockerdev/.bashrc b/.dockerdev/.bashrc
deleted file mode 100644
index 4f233c53..00000000
--- a/.dockerdev/.bashrc
+++ /dev/null
@@ -1 +0,0 @@
-alias be="bundle exec"
diff --git a/.dockerdev/.pryrc b/.dockerdev/.pryrc
deleted file mode 100644
index 4d4a34ba..00000000
--- a/.dockerdev/.pryrc
+++ /dev/null
@@ -1,7 +0,0 @@
-# frozen_string_literal: true
-
-if ENV["HISTFILE"]
-  hist_dir = ENV["HISTFILE"].sub(/\/[^\/]+$/, "")
-  Pry.config.history_save = true
-  Pry.config.history_file = File.join(hist_dir, ".pry_history")
-end
diff --git a/.dockerdev/.psqlrc b/.dockerdev/.psqlrc
deleted file mode 100644
index 57ea736f..00000000
--- a/.dockerdev/.psqlrc
+++ /dev/null
@@ -1,26 +0,0 @@
--- Don't display the "helpful" message on startup.
-\set QUIET 1
-
--- Allow specifying the path to history file via `PSQL_HISTFILE` env variable
--- (and fallback to the default $HOME/.psql_history otherwise)
-\set HISTFILE `[[ -z $PSQL_HISTFILE ]] && echo $HOME/.psql_history || echo $PSQL_HISTFILE`
-
--- Show how long each query takes to execute
-\timing
-
--- Use best available output format
-\x auto
-
--- Verbose error reports
-\set VERBOSITY verbose
-
--- If a command is run more than once in a row,
--- only store it once in the history
-\set HISTCONTROL ignoredups
-\set COMP_KEYWORD_CASE upper
-
--- By default, NULL displays as an empty space. Is it actually an empty
--- string, or is it null? This makes that distinction visible
-\pset null '[NULL]'
-
-\unset QUIET
diff --git a/.dockerdev/Aptfile b/.dockerdev/Aptfile
deleted file mode 100644
index f027e0d4..00000000
--- a/.dockerdev/Aptfile
+++ /dev/null
@@ -1 +0,0 @@
-vim
diff --git a/.dockerdev/Dockerfile b/.dockerdev/Dockerfile
deleted file mode 100644
index 686c2396..00000000
--- a/.dockerdev/Dockerfile
+++ /dev/null
@@ -1,67 +0,0 @@
-ARG RUBY_VERSION
-FROM ruby:$RUBY_VERSION-slim-buster
-
-ARG PG_MAJOR
-ARG NODE_MAJOR
-ARG BUNDLER_VERSION
-ARG YARN_VERSION
-
-# Common dependencies
-RUN apt-get update -qq \
-  && DEBIAN_FRONTEND=noninteractive apt-get install -yq --no-install-recommends \
-    build-essential \
-    gnupg2 \
-    curl \
-    less \
-    git \
-  && apt-get clean \
-  && rm -rf /var/cache/apt/archives/* \
-  && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* \
-  && truncate -s 0 /var/log/*log
-
-# Add PostgreSQL to sources list
-RUN curl -sSL https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add - \
-  && echo 'deb http://apt.postgresql.org/pub/repos/apt/ buster-pgdg main' $PG_MAJOR > /etc/apt/sources.list.d/pgdg.list
-
-# Add NodeJS to sources list
-RUN curl -sL https://deb.nodesource.com/setup_$NODE_MAJOR.x | bash -
-
-# Add Yarn to the sources list
-RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - \
-  && echo 'deb http://dl.yarnpkg.com/debian/ stable main' > /etc/apt/sources.list.d/yarn.list
-
-# Install dependencies
-COPY .dockerdev/Aptfile /tmp/Aptfile
-RUN apt-get update -qq && DEBIAN_FRONTEND=noninteractive apt-get -yq dist-upgrade && \
-  DEBIAN_FRONTEND=noninteractive apt-get install -yq --no-install-recommends \
-    libpq-dev \
-    postgresql-client-$PG_MAJOR \
-    nodejs \
-    yarn=$YARN_VERSION-1 \
-    $(cat /tmp/Aptfile | xargs) && \
-    apt-get clean && \
-    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
-    truncate -s 0 /var/log/*log
-
-# Configure bundler
-ENV LANG=C.UTF-8 \
-  BUNDLE_JOBS=4 \
-  BUNDLE_RETRY=3
-
-# Uncomment this line if you store Bundler settings in the project's root
-# ENV BUNDLE_APP_CONFIG=.bundle
-
-# Uncomment this line if you want to run binstubs without prefixing with `bin/` or `bundle exec`
-# ENV PATH /app/bin:$PATH
-
-# Upgrade RubyGems and install required Bundler version
-# See https://github.com/evilmartians/terraforming-rails/pull/24 for discussion
-RUN gem update --system && \
-    rm /usr/local/lib/ruby/gems/*/specifications/default/bundler-*.gemspec && \
-    gem uninstall bundler && \
-    gem install bundler -v $BUNDLER_VERSION
-
-# Create a directory for the app code
-RUN mkdir -p /app
-
-WORKDIR /app
diff --git a/.github/workflows/system_test.yml b/.github/workflows/system_test.yml
index a6c2a6ed..f5bece29 100644
--- a/.github/workflows/system_test.yml
+++ b/.github/workflows/system_test.yml
@@ -13,24 +13,7 @@ jobs:
       BUNDLE_JOBS: 4
       BUNDLE_RETRY: 3
       CI: true
-      DATABASE_URL: postgres://postgres:postgres@localhost:5432
-      CHROME_URL: http://localhost:3000
       RAILS_ENV: test
-    services:
-      postgres:
-        image: postgres:13.0
-        env:
-          POSTGRES_PASSWORD: postgres
-        ports: ["5432:5432"]
-        options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
-      redis:
-        image: redis:5.0-alpine
-        ports: ["6379:6379"]
-        options: --health-cmd="redis-cli ping" --health-interval 1s --health-timeout 3s --health-retries 30
-      chrome:
-        image: browserless/chrome:1.31-chrome-stable
-        ports: ["3000:3000"]
-        options: -e CONNECTION_TIMEOUT=600000
     steps:
       - uses: actions/checkout@v2
       - uses: actions/cache@v1
@@ -42,9 +25,10 @@ jobs:
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: 3.0.1
-      - name: Install PostgreSQL client
+      - name: Install libsqlite3
         run: |
-          sudo apt-get -yqq install libpq-dev
+          sudo apt-get update
+          sudo apt-get install libsqlite3-dev
       - name: Bundle install
         run: |
           bundle config path /home/runner/bundle
@@ -69,8 +53,5 @@ jobs:
       - name: Run RSpec
         run: |
           bundle exec rails db:prepare
-          bundle exec rails g anycable:download --bin-path=./bin
           bundle exec rails webpacker:compile
-          ./bin/anycable-go --host "0.0.0.0" &
-          export CABLE_URL="ws://$(hostname):8080/cable"
           bundle exec rspec --tag type:system
diff --git a/.github/workflows/unit_test.yml b/.github/workflows/unit_test.yml
index 599d2122..0239adb9 100644
--- a/.github/workflows/unit_test.yml
+++ b/.github/workflows/unit_test.yml
@@ -13,19 +13,7 @@ jobs:
       BUNDLE_JOBS: 4
       BUNDLE_RETRY: 3
       CI: true
-      DATABASE_URL: postgres://postgres:postgres@localhost:5432
       RAILS_ENV: test
-    services:
-      postgres:
-        image: postgres:11.1
-        ports: ["5432:5432"]
-        env:
-          POSTGRES_PASSWORD: postgres
-        options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
-      redis:
-        image: redis:5.0-alpine
-        ports: ["6379:6379"]
-        options: --health-cmd="redis-cli ping" --health-interval 1s --health-timeout 3s --health-retries 30
     steps:
       - uses: actions/checkout@v2
       - uses: actions/cache@v1
@@ -37,9 +25,10 @@ jobs:
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: 3.0.1
-      - name: Install PostgreSQL client
+      - name: Install libsqlite3
         run: |
-          sudo apt-get -yqq install libpq-dev
+          sudo apt-get update
+          sudo apt-get install libsqlite3-dev
       - name: Bundle install
         run: |
           bundle config path /home/runner/bundle
diff --git a/Gemfile b/Gemfile
index 4b1db13b..8406e1bc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,9 +5,8 @@ ruby '3.0.1'
 
 gem 'rails', '~> 6.1'
 gem 'webpacker', '6.0.0.beta.6'
-gem 'pg', '~> 1.0'
+gem 'sqlite3', '~> 1.4'
 gem 'puma', '~> 4.1'
-gem 'redis', '~> 4.0'
 gem 'anycable', '> 1.0.99'
 gem 'anycable-rails', '> 1.0.99'
 
@@ -21,6 +20,10 @@ group :development, :test do
   gem 'pry-byebug'
   gem 'pry-rails'
   gem 'rspec-rails', '~> 4.0.0'
+
+  # Rack-based AnyCable server implementation
+  gem 'anycable-rack-server', '~> 0.4.0'
+  gem 'msgpack', '~> 1.4'
 end
 
 group :development do
diff --git a/Gemfile.lock b/Gemfile.lock
index aad7a2b7..ac78948c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -76,6 +76,11 @@ GEM
     anycable-core (1.1.0.rc1)
       anyway_config (>= 2.1.0)
       google-protobuf (>= 3.13)
+    anycable-rack-server (0.4.0)
+      anycable (> 1.0.99, < 2.0)
+      anyway_config (>= 2.1.0)
+      connection_pool (~> 2.2)
+      websocket (~> 1.2)
     anycable-rails (1.1.0.rc1.1)
       actioncable (>= 6)
       anycable-core (> 1.0.99, < 2.0)
@@ -101,6 +106,7 @@ GEM
       adamantium (~> 0.2.0)
       equalizer (~> 0.0.9)
     concurrent-ruby (1.1.8)
+    connection_pool (2.2.5)
     crass (1.0.6)
     cuprite (0.13)
       capybara (>= 2.1, < 4)
@@ -156,7 +162,6 @@ GEM
     parallel (1.20.1)
     parser (3.0.0.0)
       ast (~> 2.4.1)
-    pg (1.2.3)
     procto (0.0.3)
     pry (0.13.1)
       coderay (~> 1.1)
@@ -206,7 +211,6 @@ GEM
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    redis (4.2.5)
     regexp_parser (2.1.1)
     rexml (3.2.4)
     rspec-core (3.10.1)
@@ -263,6 +267,7 @@ GEM
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
+    sqlite3 (1.4.2)
     standard (1.0.4)
       rubocop (= 1.11.0)
       rubocop-performance (= 1.10.1)
@@ -289,6 +294,7 @@ GEM
       rack-proxy (>= 0.6.1)
       railties (>= 5.2)
       semantic_range (>= 2.3.0)
+    websocket (1.2.9)
     websocket-driver (0.7.3)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
@@ -301,22 +307,23 @@ PLATFORMS
 
 DEPENDENCIES
   anycable (> 1.0.99)
+  anycable-rack-server (~> 0.4.0)
   anycable-rails (> 1.0.99)
   bootsnap (>= 1.4.2)
   capybara
   cuprite
   listen
+  msgpack (~> 1.4)
   nanoid
-  pg (~> 1.0)
   pry-byebug
   pry-rails
   puma (~> 4.1)
   rails (~> 6.1)
-  redis (~> 4.0)
   rspec-rails (~> 4.0.0)
   rubocop-rails
   rubocop-rspec
   ruby-next (>= 0.10.0)
+  sqlite3 (~> 1.4)
   standard (~> 1.0)
   test-prof
   turbo-rails
diff --git a/Procfile.dev b/Procfile.dev
new file mode 100644
index 00000000..8d13a6d3
--- /dev/null
+++ b/Procfile.dev
@@ -0,0 +1,2 @@
+server: bundle exec rails s -p 3000
+assets: bundle exec bin/webpack-dev-server
diff --git a/README.md b/README.md
index a837daed..3d821d19 100644
--- a/README.md
+++ b/README.md
@@ -12,59 +12,38 @@ This repository contains the code for AnyCable Rails demo application and its di
 
 ## Installation
 
-This app has a Docker-first configuration based one the [Ruby on Whales post](https://evilmartians.com/chronicles/ruby-on-whales-docker-for-ruby-rails-development).
+This branch has a minimal number of dependencies to make it easier to run the project locally: SQLite instead of Postgres, no Redis, no Docker.
 
-You need:
-
-- `docker` and `docker-compose` installed.
-
-For MacOS just use [official app](https://docs.docker.com/engine/installation/mac/).
-
-- [`dip`](https://github.com/bibendi/dip) installed.
-
-Run the following command to build images and provision the application:
+You need Ruby and NodeJS installed on your local machine (and maybe some common system deps for such gems as nokogiri and sqlite3).
 
 ```sh
-dip provision
+bundle install
+yarn install
+bin/setup
 ```
 
 ## Running
 
-You can start Rails server along with AnyCable by running:
+You can start Rails server by running:
 
 ```sh
-dip up rails anycable
+bundle exec rails s
 ```
 
 Then go to [http://localhost:3000/](http://localhost:3000/) and see the application in action.
 
-## Debugging
-
-If you want to run Rails server and/or with debugging capabilites, run the following commands:
-
-```sh
-# for Rails server
-dip rails s
-
-# for AnyCable
-dip anycable
-```
-
 ## Testing
 
-We separate unit and system specs and provide convenient Dip commands to run them:
+We use RSpec for testing:
 
 ```sh
-# only unit tests
-dip rspec
-
-# only system tests
-dip rspec system
+bundle exec rspec
 ```
 
+**NOTE:** System tests require Chrome browser to be installed on your machine (no other software required).
+
 ## Resources
 
-- [Ruby on Whales](https://evilmartians.com/chronicles/ruby-on-whales-docker-for-ruby-rails-development)—learn about the Docker development setup used for this application.
 - [RuboCoping with legacy](https://evilmartians.com/chronicles/rubocoping-with-legacy-bring-your-ruby-code-up-to-standard)—this is how we configure RuboCop.
 - [Evil Front](https://evilmartians.com/chronicles/evil-front-part-3)—some frontend ideas are borrowed from this post.
 - [Ruby Next](https://evilmartians.com/chronicles/ruby-next-make-all-rubies-quack-alike)—we're using the edge Ruby syntax!
diff --git a/config.ru b/config.ru
index bff88d60..2e030846 100644
--- a/config.ru
+++ b/config.ru
@@ -5,3 +5,4 @@
 require_relative "config/environment"
 
 run Rails.application
+Rails.application.load_server
diff --git a/config/anycable.yml b/config/anycable.yml
index 062de4e2..11c929a4 100644
--- a/config/anycable.yml
+++ b/config/anycable.yml
@@ -20,14 +20,22 @@ default: &default
   rpc_host: "127.0.0.1:50051"
   # Whether to enable gRPC level logging or not
   log_grpc: false
-  # Use Redis to broadcast messages to AnyCable server
-  broadcast_adapter: redis
+  # Use HTTP adapter for a quick start (since redis gem is not present in the project)
+  broadcast_adapter: http
   # Use the same channel name for WebSocket server, e.g.:
   #   $ anycable-go --redis-channel="__anycable__"
   redis_channel: "__anycable__"
 
 development:
   <<: *default
+  embedded: true
+  http_broadcast_url: "http://localhost:3000/_anycable_rack_broadcast"
+
+test:
+  <<: *default
+  http_broadcast_url: "http://localhost:3023/_anycable_rack_broadcast"
 
 production:
   <<: *default
+  # Use Redis in production
+  broadcast_adapter: redis
diff --git a/config/database.yml b/config/database.yml
index dfc41703..fb83db45 100644
--- a/config/database.yml
+++ b/config/database.yml
@@ -1,16 +1,16 @@
 default: &default
-  adapter: postgresql
+  adapter: sqlite3
   pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
   url: <%= ENV["DATABASE_URL"] %>
   timeout: 5000
 
 development:
   <<: *default
-  database: any_rails_demo_dev
+  database: db/any_rails_demo_dev.sqlite3
 
 test:
   <<: *default
-  database: any_rails_demo_test
+  database: db/any_rails_demo_test.sqlite3
 
 production:
   <<: *default
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 4b79746e..9dd2794f 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -2,9 +2,14 @@
 
 Rails.application.configure do
   # Specify AnyCable WebSocket server URL to use by JS client
-  config.after_initialize do
-    config.action_cable.url = ActionCable.server.config.url = ENV.fetch("CABLE_URL", "ws://localhost:8080/cable") if AnyCable::Rails.enabled?
-  end
+  config.action_cable.url = ENV.fetch("CABLE_URL", "/rack_cable")
+  # Disable built-in Action Cable
+  config.action_cable.mount_path = nil
+  # Run AnyCable Rack server at a custom path
+  config.any_cable_rack.mount_path = "/rack_cable"
+  # Use Msgpack coder
+  config.any_cable_rack.coder = :msgpack
+
   # Settings specified here will take precedence over those in config/application.rb.
 
   # In the development environment your application's code is reloaded on
diff --git a/config/environments/test.rb b/config/environments/test.rb
index c4e9997a..ecdd9c5f 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -8,13 +8,14 @@
 Rails.application.configure do
   # Enforce AnyCable patches to make it possible to use any_cable adapter for system tests
   require "anycable/rails/actioncable/connection"
-
   # Specify AnyCable WebSocket server URL to use by JS client
-  config.after_initialize do
-    config.action_cable.url = ActionCable.server.config.url = ENV.fetch("CABLE_URL", "ws://localhost:8080/cable")
-  end
-
+  config.action_cable.url = "/rack_cable"
+  # Disable built-in Action Cable
   config.action_cable.mount_path = nil
+  # Run AnyCable Rack server at a custom path
+  config.any_cable_rack.mount_path = "/rack_cable"
+  # Use Msgpack coder
+  config.any_cable_rack.coder = :msgpack
 
   # Settings specified here will take precedence over those in config/application.rb.
   config.cache_classes = true
diff --git a/db/schema.rb b/db/schema.rb
index 92f5ed04..e9f39cf7 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -12,11 +12,8 @@
 
 ActiveRecord::Schema.define(version: 2020_05_04_092152) do
 
-  # These are extensions that must be enabled in order to support this database
-  enable_extension "plpgsql"
-
   create_table "items", force: :cascade do |t|
-    t.bigint "list_id", null: false
+    t.integer "list_id", null: false
     t.text "desc", null: false
     t.boolean "completed", default: false, null: false
     t.datetime "created_at", precision: 6, null: false
@@ -26,7 +23,7 @@
 
   create_table "lists", force: :cascade do |t|
     t.string "name", null: false
-    t.bigint "workspace_id", null: false
+    t.integer "workspace_id", null: false
     t.datetime "created_at", precision: 6, null: false
     t.datetime "updated_at", precision: 6, null: false
     t.index ["workspace_id"], name: "index_lists_on_workspace_id"
diff --git a/dip.yml b/dip.yml
deleted file mode 100644
index 38532c32..00000000
--- a/dip.yml
+++ /dev/null
@@ -1,91 +0,0 @@
-version: '5.0'
-
-environment:
-  RAILS_ENV: development
-
-compose:
-  files:
-    - docker-compose.yml
-
-interaction:
-  runner:
-    description: Open a Bash shell within a Rails container (with dependencies up)
-    service: rails
-    command: /bin/bash
-
-  bash:
-    description: Run an arbitrary script within a container (or open a shell without deps)
-    service: rails
-    command: /bin/bash
-    compose_run_options: [no-deps]
-
-  bundle:
-    description: Run Bundler commands
-    service: rails
-    command: bundle
-    compose_run_options: [no-deps]
-
-  rake:
-    description: Run Rake commands
-    service: rails
-    command: bundle exec rake
-
-  rails:
-    description: Run Rails commands
-    service: rails
-    command: bundle exec rails
-    subcommands:
-      s:
-        description: Run Rails server available at http://localhost:3030
-        service: rails
-        compose:
-          run_options: [service-ports, use-aliases]
-
-  anycable:
-    description: Run AnyCable RPC (with debugging capabilities)
-    service: anycable
-    compose_run_options: [service-ports, use-aliases]
-
-  yarn:
-    description: Run Yarn commands
-    service: rails
-    command: yarn
-    compose_run_options: [no-deps]
-
-  rspec:
-    description: Run Rails unit tests
-    service: rails
-    environment:
-      RAILS_ENV: test
-    command: bundle exec rspec --exclude-pattern spec/system/**/*_spec.rb
-    subcommands:
-      system:
-        description: Run Rails system tests
-        service: rspec_system
-        command: bundle exec rspec --pattern spec/system/**/*_spec.rb
-        compose:
-          run_options: [service-ports, use-aliases]
-
-  rubocop:
-    description: Run Rubocop
-    service: rails
-    command: bundle exec rubocop
-    compose_run_options: [no-deps]
-
-  psql:
-    description: Run psql console
-    service: postgres
-    command: psql -h postgres -U postgres -d example_app_dev
-
-  'redis-cli':
-    description: Run Redis console
-    service: redis
-    command: redis-cli -h redis
-
-provision:
-  - dip compose down --volumes
-  - dip compose up -d postgres redis
-  - dip bundle install
-  - dip yarn install
-  - dip rails db:prepare
-  - dip rails db:test:prepare
diff --git a/docker-compose.yml b/docker-compose.yml
deleted file mode 100644
index 561acfc9..00000000
--- a/docker-compose.yml
+++ /dev/null
@@ -1,185 +0,0 @@
-version: '2.4'
-
-x-app: &app
-  build:
-    context: .
-    dockerfile: ./.dockerdev/Dockerfile
-    args:
-      RUBY_VERSION: '3.0.1'
-      PG_MAJOR: '13'
-      NODE_MAJOR: '12'
-      YARN_VERSION: '1.13.0'
-      BUNDLER_VERSION: '2.2.15'
-  environment: &env
-    NODE_ENV: development
-    RAILS_ENV: ${RAILS_ENV:-development}
-  image: anycable-rails-demo-dev:1.3.0
-  tmpfs:
-    - /tmp
-
-x-backend: &backend
-  <<: *app
-  stdin_open: true
-  tty: true
-  volumes:
-    - .:/app:cached
-    - rails_cache:/app/tmp/cache
-    - bundle:/usr/local/bundle
-    - node_modules:/app/node_modules
-    - packs:/app/public/packs
-    - packs-test:/app/public/packs-test
-    - .dockerdev/.psqlrc:/root/.psqlrc:ro
-    - .dockerdev/.bashrc:/root/.bashrc:ro
-    - .dockerdev/.pryrc:/root/.pryrc:ro
-  environment: &backend_environment
-    <<: *env
-    REDIS_URL: redis://redis:6379/
-    DATABASE_URL: postgres://postgres:postgres@postgres:5432
-    CHROME_URL: http://chrome:3333
-    BOOTSNAP_CACHE_DIR: /usr/local/bundle/_bootsnap
-    WEBPACKER_DEV_SERVER_HOST: webpacker
-    WEB_CONCURRENCY: 1
-    HISTFILE: /app/log/.bash_history
-    PSQL_HISTFILE: /app/log/.psql_history
-    EDITOR: vi
-    LOG: ${LOG:-0}
-  depends_on: &backend_depends_on
-    postgres:
-      condition: service_healthy
-    redis:
-      condition: service_healthy
-
-services:
-  rails:
-    <<: *backend
-    command: bundle exec rails server -b 0.0.0.0
-    ports:
-      - '3000:3000'
-
-  # Separate definition for system tests to add Chrome as a dependency
-  rspec_system:
-    <<: *backend
-    ports:
-      - '3000:3000'
-      - '50051'
-    environment:
-      <<: *backend_environment
-      APP_HOST: anycable.test
-      ANYCABLE_RPC_HOST: 0.0.0.0:50051
-      CABLE_URL: "ws://ws.anycable.test:8080/cable"
-    depends_on:
-      <<: *backend_depends_on
-      chrome:
-        condition: service_started
-      ws_test:
-        condition: service_started
-    networks:
-      default:
-        aliases:
-          - anycable.test
-
-  sidekiq:
-    <<: *backend
-    command: bundle exec sidekiq -C config/sidekiq.yml
-
-  ws: &ws
-    image: anycable/anycable-go:1.1.0.rc1
-    ports:
-      - '8080:8080'
-    environment: &ws_environment
-      ANYCABLE_HOST: "0.0.0.0"
-      ANYCABLE_REDIS_URL: redis://redis:6379/0
-      ANYCABLE_RPC_HOST: anycable:50051
-      ANYCABLE_DEBUG: 1
-    depends_on:
-      redis:
-        condition: service_healthy
-
-  ws_test:
-    <<: *ws
-    ports:
-      - '8080'
-    environment:
-      <<: *ws_environment
-      ANYCABLE_RPC_HOST: anycable.test:50051
-    networks:
-      default:
-        aliases:
-          - ws.anycable.test
-
-  anycable:
-    <<: *backend
-    command: bundle exec anycable
-    environment:
-      <<: *backend_environment
-      ANYCABLE_REDIS_URL: redis://redis:6379/0
-      ANYCABLE_RPC_HOST: 0.0.0.0:50051
-      ANYCABLE_DEBUG: 1
-    ports:
-      - '50051'
-    depends_on:
-      <<: *backend_depends_on
-      ws:
-        condition: service_started
-
-  postgres:
-    image: postgres:13.0
-    volumes:
-      - .dockerdev/.psqlrc:/root/.psqlrc:ro
-      - postgres:/var/lib/postgresql/data
-      - ./log:/root/log:cached
-    environment:
-      POSTGRES_PASSWORD: postgres
-      PSQL_HISTFILE: /root/log/.psql_history
-    ports:
-      - 5432
-    healthcheck:
-      test: pg_isready -U postgres -h 127.0.0.1
-      interval: 5s
-
-  redis:
-    image: redis:5.0-alpine
-    volumes:
-      - redis:/data
-    ports:
-      - 6379
-    healthcheck:
-      test: redis-cli ping
-      interval: 1s
-      timeout: 3s
-      retries: 30
-
-  webpacker:
-    <<: *app
-    command: bundle exec ./bin/webpack-dev-server
-    ports:
-      - '3035:3035'
-      - 3036
-    volumes:
-      - .:/app:cached
-      - bundle:/usr/local/bundle
-      - node_modules:/app/node_modules
-      - packs:/app/public/packs
-      - packs-test:/app/public/packs-test
-    environment:
-      <<: *env
-      WEBPACKER_DEV_SERVER_HOST: 0.0.0.0
-
-  chrome:
-    image: browserless/chrome:1.31-chrome-stable
-    ports:
-      - '3333:3333'
-    environment:
-      PORT: 3333
-      # Set connection timeout for debugging
-      # https://docs.browserless.io/docs/docker.html#connection-timeout
-      CONNECTION_TIMEOUT: 600000
-
-volumes:
-  postgres:
-  redis:
-  bundle:
-  node_modules:
-  rails_cache:
-  packs:
-  packs-test:
diff --git a/frontend/utils/cable.js b/frontend/utils/cable.js
index 4c03011f..0a98cc7f 100644
--- a/frontend/utils/cable.js
+++ b/frontend/utils/cable.js
@@ -1,10 +1,13 @@
-import { createConsumer } from "@rails/actioncable";
+import { createConsumer, logger, adapters, INTERNAL } from "@rails/actioncable";
+import msgpack from "@ygoe/msgpack";
 
 let consumer;
 
 export const createCable = () => {
   if (!consumer) {
     consumer = createConsumer();
+    Object.assign(consumer.connection, connectionExtension);
+    Object.assign(consumer.connection.events, connectionEventsExtension);
   }
 
   return consumer;
@@ -14,3 +17,68 @@ export const createChannel = (...args) => {
   const consumer = createCable();
   return consumer.subscriptions.create(...args);
 };
+
+// Msgpack support
+// Patches this file: https://github.com/rails/rails/blob/main/actioncable/app/javascript/action_cable/connection.js
+
+// Replace JSON protocol with msgpack
+const supportedProtocols = [
+  "actioncable-v1-msgpack"
+]
+
+const protocols = supportedProtocols
+const { message_types } = INTERNAL
+
+const connectionExtension = {
+  open() {
+    if (this.isActive()) {
+      logger.log(`Attempted to open WebSocket, but existing socket is ${this.getState()}`)
+      return false
+    } else {
+      logger.log(`Opening WebSocket, current state is ${this.getState()}, subprotocols: ${protocols}`)
+      if (this.webSocket) { this.uninstallEventHandlers() }
+      this.webSocket = new adapters.WebSocket(this.consumer.url, protocols)
+      this.webSocket.binaryType = "arraybuffer"
+      this.installEventHandlers()
+      this.monitor.start()
+      return true
+    }
+  },
+  isProtocolSupported() {
+    return supportedProtocols[0] == this.getProtocol()
+  },
+  send(data) {
+    if (this.isOpen()) {
+      const encoded = msgpack.encode(data);
+      this.webSocket.send(encoded)
+      return true
+    } else {
+      return false
+    }
+  }
+}
+
+// Incoming messages are handled by the connection.events.message function.
+// There is no way to patch it, so, we have to copy-paste :(
+const connectionEventsExtension = {
+  message(event) {
+    if (!this.isProtocolSupported()) { return }
+    const {identifier, message, reason, reconnect, type} = msgpack.decode(new Uint8Array(event.data))
+    switch (type) {
+      case message_types.welcome:
+        this.monitor.recordConnect()
+        return this.subscriptions.reload()
+      case message_types.disconnect:
+        logger.log(`Disconnecting. Reason: ${reason}`)
+        return this.close({allowReconnect: reconnect})
+      case message_types.ping:
+        return this.monitor.recordPing()
+      case message_types.confirmation:
+        return this.subscriptions.notify(identifier, "connected")
+      case message_types.rejection:
+        return this.subscriptions.reject(identifier)
+      default:
+        return this.subscriptions.notify(identifier, "received", message)
+    }
+  },
+};
diff --git a/package.json b/package.json
index 6c72aa29..b2542e82 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,7 @@
     "@rails/actioncable": "6.0.2",
     "@rails/ujs": "^6.0.3-4",
     "@rails/webpacker": "^6.0.0-beta.5",
+    "@ygoe/msgpack": "^1.0.2",
     "autoprefixer": "^10.2.5",
     "css-loader": "^5.1.3",
     "css-minimizer-webpack-plugin": "^1.3.0",
diff --git a/spec/support/login_helpers.rb b/spec/support/login_helpers.rb
index 0d02bb0c..1668335f 100644
--- a/spec/support/login_helpers.rb
+++ b/spec/support/login_helpers.rb
@@ -5,8 +5,7 @@ module System
     def login_user(name)
       page.driver.set_cookie(
         :uid,
-        [name, Nanoid.generate(size: 3)].join("/"),
-        domain: CAPYBARA_COOKIE_DOMAIN
+        [name, Nanoid.generate(size: 3)].join("/")
       )
     end
 
diff --git a/spec/system/support/anycable_setup.rb b/spec/system/support/anycable_setup.rb
index 9f5a7035..1168976d 100644
--- a/spec/system/support/anycable_setup.rb
+++ b/spec/system/support/anycable_setup.rb
@@ -4,17 +4,11 @@
 
 # Run AnyCable RPC server
 RSpec.configure do |config|
-  # Skip assets precompilcation if we exclude system specs.
+  # Only start RPC server if system tests are included into the run
   next if config.filter.opposite.rules[:type] == "system" || config.exclude_pattern.match?(%r{spec/system})
 
   require "anycable/cli"
-
-  cli = AnyCable::CLI.new(embedded: true)
-  cli.run
-
-  config.after(:suite) do
-    cli&.shutdown
-  end
+  AnyCable::CLI.embed!
 
   config.before(:each, type: :system) do
     next if ActionCable.server.pubsub.is_a?(ActionCable::SubscriptionAdapter::AnyCable)
diff --git a/spec/system/support/better_rails_system_tests.rb b/spec/system/support/better_rails_system_tests.rb
index 540dfad7..f25c7307 100644
--- a/spec/system/support/better_rails_system_tests.rb
+++ b/spec/system/support/better_rails_system_tests.rb
@@ -8,11 +8,6 @@ def absolute_image_path
     Rails.root.join("#{Capybara.save_path}/screenshots/#{image_name}.png")
   end
 
-  # Use relative path in screenshot message to make it clickable in VS Code when running in Docker
-  def image_path
-    absolute_image_path.relative_path_from(Rails.root).to_s
-  end
-
   # Make failure screenshots compatible with multi-session setup
   def take_screenshot
     return super unless Capybara.last_used_session
diff --git a/spec/system/support/capybara_setup.rb b/spec/system/support/capybara_setup.rb
index 688bb5a1..6ec75298 100644
--- a/spec/system/support/capybara_setup.rb
+++ b/spec/system/support/capybara_setup.rb
@@ -2,21 +2,6 @@
 
 # Capybara settings (not covered by Rails system tests)
 
-# Make server listening on all hosts
-Capybara.server_host = "0.0.0.0"
-# Use a hostname accessible from the outside world
-# NOTE: Rails overrides Capybara.app_host in Rails <6.1, so we have
-# to store it differently
-CAPYBARA_APP_HOST = "http://#{ENV.fetch("APP_HOST", `hostname`.strip&.downcase || "0.0.0.0")}"
-Capybara.app_host = CAPYBARA_APP_HOST
-
-# Which domain to use when setting cookies directly in tests.
-CAPYBARA_COOKIE_DOMAIN = URI.parse(CAPYBARA_APP_HOST).host.then do |host|
-  # If host is a top-level domain
-  next host unless host.include?(".")
-  ".#{host}"
-end
-
 # Don't wait too long in `have_xyz` matchers
 Capybara.default_max_wait_time = 2
 
@@ -26,6 +11,9 @@
 # Where to store artifacts (e.g. screenshots, downloaded files, etc.)
 Capybara.save_path = ENV.fetch("CAPYBARA_ARTIFACTS", "./tmp/capybara")
 
+# Use fixed server port to configure AnyCable broadcast url
+Capybara.server_port = 3023
+
 Capybara.singleton_class.prepend(Module.new do
   attr_accessor :last_used_session
 
diff --git a/spec/system/support/cuprite_setup.rb b/spec/system/support/cuprite_setup.rb
index 1c964e65..d8062442 100644
--- a/spec/system/support/cuprite_setup.rb
+++ b/spec/system/support/cuprite_setup.rb
@@ -3,31 +3,6 @@
 # Cuprite is a modern Capybara driver which uses Chrome CDP API
 # instead of Selenium & co.
 # See https://github.com/rubycdp/cuprite
-
-REMOTE_CHROME_URL = ENV["CHROME_URL"]
-REMOTE_CHROME_HOST, REMOTE_CHROME_PORT =
-  if REMOTE_CHROME_URL
-    URI.parse(REMOTE_CHROME_URL).yield_self do |uri|
-      [uri.host, uri.port]
-    end
-  end
-
-# Check whether the remote chrome is running and configure the Capybara
-# driver for it.
-remote_chrome =
-  begin
-    if REMOTE_CHROME_URL.nil?
-      false
-    else
-      Socket.tcp(REMOTE_CHROME_HOST, REMOTE_CHROME_PORT, connect_timeout: 1).close
-      true
-    end
-  rescue Errno::ECONNREFUSED, Errno::EHOSTUNREACH, SocketError
-    false
-  end
-
-remote_options = remote_chrome ? {url: REMOTE_CHROME_URL} : {}
-
 require "capybara/cuprite"
 
 Capybara.register_driver(:cuprite) do |app|
@@ -35,9 +10,14 @@
     app,
     **{
       window_size: [1200, 800],
-      browser_options: remote_chrome ? {"no-sandbox" => nil} : {},
-      inspector: true
-    }.merge(remote_options)
+      browser_options: {},
+      # Increase Chrome startup timeout for CI
+      process_timeout: 10,
+      inspector: true,
+      # Allow running Chrome in a headful mode by setting HEADLESS env
+      # var to a falsey value
+      headless: !ENV["HEADLESS"].in?(%w[n 0 no false])
+    }
   )
 end
 
@@ -50,9 +30,7 @@ def pause
   end
 
   def debug(binding = nil)
-    $stdout.puts "🔎 Open Chrome inspector at http://localhost:3333"
-    return binding.pry if binding
-    page.driver.pause
+    page.driver.debug(binding)
   end
 end
 
diff --git a/yarn.lock b/yarn.lock
index f87bda1a..65b6bf5f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1158,6 +1158,11 @@
   resolved "https://registry.yarnpkg.com/@xtuc/long/-/long-4.2.2.tgz#d291c6a4e97989b5c61d9acf396ae4fe133a718d"
   integrity sha512-NuHqBY1PB/D8xU6s/thBgOAiAP7HOYDQ32+BFZILJ8ivkUkAHQnWfn6WhL79Owj1qmUnoN/YPhktdIoucipkAQ==
 
+"@ygoe/msgpack@^1.0.2":
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/@ygoe/msgpack/-/msgpack-1.0.2.tgz#7237b74179933bb9b73aa09d15d2a4414cfc7377"
+  integrity sha512-GXnUKo8aFiTE1RmhzGXzXNXoN500Zxe0FH62thZi18xI82N+Gcdw9MWjhV0SdTEfjHFwZiw0+ZJSE8sD02pRsQ==
+
 accepts@~1.3.4, accepts@~1.3.5, accepts@~1.3.7:
   version "1.3.7"
   resolved "https://registry.yarnpkg.com/accepts/-/accepts-1.3.7.tgz#531bc726517a3b2b41f850021c6cc15eaab507cd"