fix docker

Author: karpikpl

.github/workflows/deploy_proxy_to_ghcr.yml

@@ -29,7 +29,7 @@ jobs:
         run: |
           GITHUB_REPO="${GITHUB_REPO,,}-with-proxy"  # convert repo name to lowercase as required by docker
           echo "building docker image in repository '$GITHUB_REPO' ..."
-          docker build --label "org.opencontainers.image.title=copilot-metrics-viewer-with-proxy" --label "org.opencontainers.image.description=Metrics viewer with proxy for GitHub Copilot usage" --label "org.opencontainers.image.source=$GITHUB_REPO" -t ghcr.io/$GITHUB_REPO:latest .
+          docker build -f api.Dockerfile --label "org.opencontainers.image.title=copilot-metrics-viewer-with-proxy" --label "org.opencontainers.image.description=Metrics viewer with proxy for GitHub Copilot usage" --label "org.opencontainers.image.source=$GITHUB_REPO" -t ghcr.io/$GITHUB_REPO:latest .
           docker push ghcr.io/$GITHUB_REPO:latest
         env:
           GITHUB_REPO: ${{ github.repository }}