Add image build flow (#13)

* add docker image creation

* update image build to alpine python

* add labels

Author: jerdog

.github/workflows/docker-publish.yml

@@ -0,0 +1,50 @@
+name: Docker Build and Publish
+
+on:
+  push:
+    branches: [ "main" ]
+    tags: [ 'v*.*.*' ]
+  pull_request:
+    branches: [ "main" ]
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=sha
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

@@ -20,31 +20,40 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     && rm -rf /var/lib/apt/lists/* \
     && apt-get clean
 
-# Install Python dependencies
+# Copy requirements first to leverage Docker cache
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
-# Copy project files
-COPY . .
-
-# Install the package in development mode
-RUN pip install -e .
-
 # Create necessary directories with proper permissions
 RUN mkdir -p /app/src/bluesky_notify/data /app/logs /app/instance \
     && chmod -R 777 /app/src/bluesky_notify/data \
     && chmod -R 777 /app/logs \
     && chmod 777 /app/instance
 
-# Create a non-root user and set ownership
+# Create a non-root user
 RUN useradd -m -r appuser \
     && chown -R appuser:appuser /app
 
+# Copy project files
+COPY --chown=appuser:appuser . .
+
+# Install the package
+RUN pip install --no-cache-dir .
+
+# Switch to non-root user
 USER appuser
 
+# Expose the application port
+EXPOSE 5001
+
 # Health check
 HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
     CMD python -c "import requests; requests.get('http://localhost:5001/health')"
 
 # Run the application
 CMD ["python", "run.py"]
+
+# Set labels
+LABEL org.opencontainers.image.source="https://github.com/jerdog/bluesky-notify"
+LABEL org.opencontainers.image.description="A cross-platform notification system for tracking and receiving alerts about new Bluesky social media posts."
+LABEL org.opencontainers.image.licenses="MIT"

run.py

@@ -27,6 +27,11 @@
 
         # Start the application
         logger.info("Starting Bluesky Notification Tracker...")
-        app.run(host="0.0.0.0", port=port, debug=True)
+        is_container = os.environ.get('DOCKER_CONTAINER', 'false').lower() == 'true'
+        app.run(
+            host="0.0.0.0",
+            port=port,
+            debug=not is_container  # Disable debug mode in container
+        )
     except Exception as e:
         logger.error(f"Application failed to start: {str(e)}")