Add GitHub Actions workflow for CI/CD

Author: gradrix

.github/workflows/main.yml

@@ -0,0 +1,83 @@
+# .github/workflows/main.yml
+name: Main
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    timeout-minutes: 45
+    env:
+      OLLAMA_HOST: http://localhost:11434
+      OLLAMA_MODEL: mistral
+      REDIS_HOST: redis
+      POSTGRES_HOST: postgres
+      POSTGRES_DB: dendrite
+      POSTGRES_USER: dendrite
+      POSTGRES_PASSWORD: dendrite_pass
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      # Optional: speed up your tests image pip installs (host cache).
+      - name: Cache pip
+        uses: actions/cache@v4
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements*.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
+
+      - name: Start services (Compose)
+        run: |
+          docker compose up -d redis postgres ollama
+          echo "Waiting for Redis..."
+          for i in {1..30}; do
+            if docker compose exec -T redis redis-cli ping | grep -q PONG; then
+              echo "Redis ready"; break
+            fi
+            if [ $i -eq 30 ]; then echo "Redis failed to start"; exit 1; fi
+            sleep 1
+          done
+
+          echo "Waiting for Postgres..."
+          for i in {1..60}; do
+            if docker compose exec -T postgres pg_isready -U "$POSTGRES_USER" >/dev/null 2>&1; then
+              echo "Postgres ready"; break
+            fi
+            if [ $i -eq 60 ]; then echo "Postgres failed to start"; exit 1; fi
+            sleep 1
+          done
+
+          echo "Waiting for Ollama API..."
+          for i in {1..120}; do
+            if curl -sSf http://localhost:11434/api/tags >/dev/null; then
+              echo "Ollama up"; break
+            fi
+            if [ $i -eq 120 ]; then
+              echo "Ollama failed to start"; docker compose logs ollama; exit 1
+            fi
+            sleep 1
+          done
+
+      - name: Pull a tiny model for CI
+        run: |
+          set -e
+          curl -sS -X POST "$OLLAMA_HOST/api/pull" -d "{\"name\":\"$OLLAMA_MODEL\"}"
+          # wait until it appears in /api/tags
+          for i in {1..600}; do
+            curl -s "$OLLAMA_HOST/api/tags" | grep -q "$OLLAMA_MODEL" && break || sleep 1
+          done
+
+      - name: Build tests image
+        run: docker compose build tests
+
+      - name: Run pytest in tests service
+        run: docker compose run --rm tests pytest -v
+
+      - name: Teardown
+        if: always()
+        run: docker compose down -v