diff --git a/.github/workflows/container.yml b/.github/workflows/container.yml
index 66a5116..0334a27 100644
--- a/.github/workflows/container.yml
+++ b/.github/workflows/container.yml
@@ -35,6 +35,12 @@ jobs:
           tags: |
             type=semver,pattern={{version}}
             type=edge
+          labels: |
+            org.opencontainers.image.title=Mg
+            org.opencontainers.image.description=Micro Emacs text editor
+            org.opencontainers.image.url=https://github.com/troglobit/mg
+            org.opencontainers.image.documentation=https://man.troglobit.com/man1/mg.1.html
+            org.opencontainers.image.source=https://github.com/troglobit/mg/tree/${GITHUB_SHA:-master}/
       - uses: docker/setup-qemu-action@v2
       - uses: docker/setup-buildx-action@v2
       - name: Log in to GHCR
@@ -51,6 +57,8 @@ jobs:
       - uses: docker/build-push-action@v4
         id: build
         with:
+          build-args: |
+            DOCKER_METADATA_OUTPUT_JSON
           context: .
           labels: ${{ steps.meta.outputs.labels }}
           platforms: ${{ matrix.platform }}
@@ -60,11 +68,11 @@ jobs:
             name-canonical=true,
             push-by-digest=true,
             push=true,
-            annotation-index.org.opencontainers.image.title=Mg,
-            annotation-index.org.opencontainers.image.description=Micro Emacs text editor ${{ matrix.platform }},
-            annotation-index.org.opencontainers.image.url=https://github.com/troglobit/mg,
-            annotation-index.org.opencontainers.image.licenses=Unlicense,
-            annotation-index.org.opencontainers.image.revision=${GITHUB_SHA}
+            annotation-index-descriptor.org.opencontainers.image.title=Mg,
+            annotation-index-descriptor.org.opencontainers.image.description=Micro Emacs text editor for ${{ matrix.platform }},
+            annotation-index-descriptor.org.opencontainers.image.url=https://github.com/troglobit/mg,
+            annotation-index-descriptor.org.opencontainers.image.licenses=Unlicense,
+            annotation-index-descriptor.org.opencontainers.image.revision=${GITHUB_SHA}
       - name: Export digest
         run: |
           mkdir -p /tmp/digests