change docker tag for stage branch (#186)

.github/workflows/build.yml

@@ -31,6 +31,12 @@ jobs:
         uses: docker/metadata-action@v3
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=raw,value={{branch}}-{{sha}}-{{date 'X'}}
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
 
       - name: Build and push image
         uses: docker/build-push-action@v2