Add dockerfile

Author: max-lt

.dockerignore

@@ -0,0 +1,10 @@
+/target
+.git
+.gitignore
+.env
+.env.*
+!.env.example
+README.md
+.vscode
+.DS_Store
+update_table.sql

.env

@@ -0,0 +1,9 @@
+# Database
+DATABASE_URL=postgres://openworkers:password@localhost:5432/openworkers
+
+# NATS
+NATS_SERVERS=nats://localhost:4222
+NATS_CREDENTIALS=
+
+# Server
+RUST_LOG='info,openworkers_scheduler=debug'

.env.example

@@ -0,0 +1,48 @@
+
+on:
+  push:
+    branches:
+      - main
+      - dev
+    tags:
+      - 'v*.*.*'
+  pull_request:
+    branches:
+      - main
+      - dev
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Check Out Repo
+        uses: actions/checkout@v4
+      - name: Docker metadata
+        id: metadata
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            ghcr.io/${{ github.repository }}
+          tags: |
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=ref,event=branch
+            type=ref,event=tag
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v5
+        with:
+          file: Dockerfile
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.metadata.outputs.tags }}
+          cache-from: type=gha,scope=main
+          cache-to: type=gha,mode=max,scope=main
+          platforms: linux/amd64,linux/arm64

.github/workflows/docker.yml

@@ -1,2 +1,7 @@
 /target
-.DS_Store
+.DS_Store
+
+# dotenv environment variable files
+/.env
+/.env.*
+!/.env.example

.gitignore

@@ -0,0 +1,26 @@
+FROM rust:1.91 AS builder
+
+RUN mkdir -p /build
+
+ENV RUST_BACKTRACE=1
+ENV SQLX_OFFLINE=true
+
+WORKDIR /build
+
+COPY . /build
+
+RUN --mount=type=cache,target=$CARGO_HOME/git \
+    --mount=type=cache,target=$CARGO_HOME/registry \
+    --mount=type=cache,target=/build/target \
+    cargo build --release && cp /build/target/release/openworkers-scheduler /build/output
+
+FROM debian:bookworm-slim
+
+RUN apt-get update \
+    # Install ca-certificates and wget (used for healthcheck)
+    && apt-get install -y ca-certificates wget \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY --from=builder /build/output /usr/local/bin/openworkers-scheduler
+
+CMD ["/usr/local/bin/openworkers-scheduler"]

.sqlx/query-efd911aec58079e06e311a5aca81e7cfaa3c37f4d3aaa46bef240c80c16b0ed5.json

@@ -7,6 +7,10 @@ pub async fn nats_connect() -> Result<async_nats::Client, async_nats::ConnectErr
     log::debug!("connecting to nats: {nats_servers}");
 
     match std::env::var("NATS_CREDENTIALS") {
+        // No credentials provided
+        Err(_) => async_nats::connect(nats_servers).await,
+        // Empty string means no credentials
+        Ok(ref s) if s.is_empty() => async_nats::connect(nats_servers).await,
         Ok(credentials) => {
             // Decode the base64 encoded credentials
             let credentials: Vec<u8> = STANDARD
@@ -22,6 +26,5 @@ pub async fn nats_connect() -> Result<async_nats::Client, async_nats::ConnectErr
 
             options.connect(nats_servers).await
         }
-        Err(_) => async_nats::connect(nats_servers).await,
     }
 }