Build, tag, push and deploy Docker image with GitHub Actions

Author: tooruu

.github/workflows/release.yml

@@ -0,0 +1,87 @@
+name: CI/CD Pipeline
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  tag-commit:
+    name: Tag commit with the new version
+    runs-on: ubuntu-latest
+    outputs:
+      version: ${{ steps.tag.outputs.version }}
+    env:
+      VERSION_PATH: arabot/__init__.py
+      VERSION_REGEX: '^\+__version__ = "(.+)"$'
+    steps:
+      - name: Checkout commit
+        uses: actions/checkout
+        with:
+          sparse-checkout: ${{ env.VERSION_PATH }}
+          sparse-checkout-cone-mode: false
+          fetch-depth: 0
+
+      - name: Set credentials
+        run: |
+          git config user.name github-actions
+          git config user.email 41898282+github-actions[bot]@users.noreply.github.com
+
+      - name: Tag commit
+        id: tag
+        run: |
+          LAST_TAG=$(git describe --abbrev=0)
+          VERSION=$(git diff "$LAST_TAG" HEAD "$VERSION_PATH" | sed -nr "s/$VERSION_REGEX/\1/p")
+          [ "$VERSION" ] && git tag -m "v$VERSION" "$VERSION"
+          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
+
+      - name: Push tag
+        if: steps.tag.outputs.version
+        run: git push --tags
+
+  build-and-push-image:
+    name: Build, tag and push Docker image to Docker Hub and GHCR
+    needs: tag-commit
+    if: needs.tag-commit.outputs.version
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ vars.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Log in 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 Docker images
+        id: build
+        uses: docker/build-push-action@v6
+        with:
+          push: true
+          provenance: mode=max
+          sbom: true
+          tags: |
+            ${{ vars.DOCKERHUB_USERNAME }}/arabot:latest
+            ${{ vars.DOCKERHUB_USERNAME }}/arabot:${{ needs.tag-commit.outputs.version }}
+            ghcr.io/${{ github.repository }}:latest
+            ghcr.io/${{ github.repository }}:${{ needs.tag-commit.outputs.version }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+  deploy:
+    name: Trigger redeploy on Railway
+    needs: build-and-push-image
+    runs-on: ubuntu-latest
+    container: ghcr.io/railwayapp/cli
+    env:
+      RAILWAY_TOKEN: ${{ secrets.RAILWAY_PROJECT_TOKEN }}
+    steps:
+      - run: railway redeploy -s ${{ vars.RAILWAY_SERVICE_ID }} -y