feat: add latest tag for version releases and strip v prefix from tags

Author: Slach

.github/workflows/build-gateway.yml

@@ -49,9 +49,10 @@ jobs:
         images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
         tags: |
           type=ref,event=branch
-          type=ref,event=tag
+          type=ref,event=tag,pattern={{version}}
           type=sha,prefix={{branch}}-
           type=raw,value=latest,enable={{is_default_branch}}
+          type=raw,value=latest,enable=${{ startsWith(github.ref, 'refs/tags/v') }}
 
     - name: Build and push Docker image
       uses: docker/build-push-action@v5