Merge pull request #4 from surajssd/add-gh-action-to-build-image

Add github action to build the docker image

.github/workflows/build-push.yaml

@@ -0,0 +1,55 @@
+name: Build & Push
+
+on:
+  push:
+    branches:
+      - main
+
+env:
+  REGISTRY: ghcr.io
+
+jobs:
+  build_and_push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+    # Download code.
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Login to GHCR
+      uses: docker/login-action@v3
+      with:
+        registry: ${{ env.REGISTRY }}
+        username: ${{ github.actor}}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Generate Tag
+      id: tag
+      run: |
+        # Generate a tag based on the commit hash and current timestamp.
+        # The format is <branch>-<commit hash>-<timestamp>.
+        echo "image_tag=$(git rev-parse --abbrev-ref HEAD)-$(git rev-parse --short HEAD)-$(date '+%Y%m%d-%H%M%S')" >> $GITHUB_OUTPUT
+
+    - name: Extract metadata labels for image
+      id: meta
+      uses: docker/metadata-action@v5
+      with:
+        images: ${{ env.REGISTRY }}/surajssd/kubecon-na24-workshop
+        tags: |
+          type=raw,value=${{ steps.tag.outputs.image_tag }}
+          type=raw,value=latest
+
+    - name: Base image
+      uses: docker/build-push-action@v6
+      with:
+        file: Dockerfile
+        push: true
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}