feat(backend): push release image to github container registery

.github/workflows/docker-build-push.yaml

@@ -0,0 +1,43 @@
+name: Build and Push Docker Images
+on:
+  push:
+    tags:
+      - "backend*"
+env:
+  REGISTRY: ghcr.io
+  BACKEND_IMAGE_NAME: ${{ github.repository_owner }}/study-app-api
+jobs:
+  build-and-push-backend:
+    name: Build and Push Backend
+    runs-on: ubuntu-latest
+    # Only run for backend tags
+    if: contains(github.ref, 'backend')
+    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: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract tag name
+        id: tag
+        run: echo "TAG=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT
+
+      - name: Build and push Backend Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: ./src/backend
+          push: true
+          tags: |
+            ${{ env.REGISTRY }}/${{ env.BACKEND_IMAGE_NAME }}:${{ steps.tag.outputs.TAG }}
+            ${{ env.REGISTRY }}/${{ env.BACKEND_IMAGE_NAME }}:latest
+    outputs:
+      tag: ${{ steps.tag.outputs.TAG }}
+      app: backend

src/backend/src/backend/main.py

@@ -98,6 +98,7 @@ async def read_stats():
 
 # Marker for CI pipeline
 # This comment is used to trigger the CI pipeline when changes are made to this file.
+# This comment is used to trigger the CI pipeline when changes are made to this file.
 
 
 def main():