Add metadata to image

.github/workflows/container.yml

@@ -20,6 +20,7 @@ jobs:
       CONTAINER_NAME: ghcr.io/${{ github.repository }}
       BUILD_PLATFORMS: linux/amd64,linux/arm,linux/arm64,linux/ppc64le,linux/s390x
       RAW_CONTAINER_TAG: ${{ github.event.inputs.container_tag || github.event.pull_request.head.ref || 'latest' }}
+      RAW_REF_NAME: ${{ github.event.pull_request.head.ref || github.ref }}
 
     steps:
       - name: Set up QEMU
@@ -49,10 +50,18 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
           CONTAINER_TAG=$(echo "$RAW_CONTAINER_TAG" | sed 's/[^a-zA-Z0-9]\+/-/')
+          REF_NAME=$(echo "$RAW_REF_NAME" | sed -r 's#^refs/(heads|tags)/##')
 
           docker buildx build \
             --platform "$BUILD_PLATFORMS" \
             --tag "$CONTAINER_NAME:$CONTAINER_TAG" \
+            --label "org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}" \
+            --label "org.opencontainers.image.documentation=${{ github.server_url }}/${{ github.repository }}" \
+            --label "org.opencontainers.image.url=${{ github.server_url }}/${{ github.repository }}/packages" \
+            --label "org.opencontainers.image.ref.name=$REF_NAME" \
+            --label "org.opencontainers.image.revision=${{ github.sha }}" \
+            --label "org.opencontainers.image.vendor=${{ github.repository_owner }}" \
+            --label "org.opencontainers.image.created=$(date -u --rfc-3339=seconds)" \
             --cache-from type=gha \
             --cache-to type=gha,mode=max \
             --pull --push .

Dockerfile

@@ -13,3 +13,7 @@ COPY --from=build /usr/src/wireproxy/wireproxy /usr/bin/wireproxy
 VOLUME [ "/etc/wireproxy"]
 ENTRYPOINT [ "/usr/bin/wireproxy" ]
 CMD [ "--config", "/etc/wireproxy/config" ]
+
+LABEL org.opencontainers.image.title wireproxy
+LABEL org.opencontainers.image.description "Wireguard client that exposes itself as a socks5 proxy"
+LABEL org.opencontainers.image.licenses ISC