feat: improved container tagging and labeling

Author: tmeckel

.github/workflows/build-and-deploy.yml

@@ -5,6 +5,10 @@ on:
     tags:
       - 'v*'
 
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: gemini-cli
+
 jobs:
   build-and-push:
     runs-on: ubuntu-latest
@@ -31,12 +35,26 @@ jobs:
           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=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+            type=sha
+            type=raw,value=latest,enable={{is_default_branch}}
+          labels: |
+            org.opencontainers.image.maintainer=Ophios GmbH
       - name: Build and push Docker image
         id: build_and_push
         uses: docker/build-push-action@v5
         with:
           context: .
           push: true
-          tags: ghcr.io/${{ github.repository }}:${{ steps.get_version.outputs.VERSION }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
           build-args: |
             GEMINI_CLI_VERSION=${{ steps.get_version.outputs.VERSION }}