Simplify docker image generation

Signed-off-by: Joachim Wiberg <[email protected]>

Author: troglobit

.github/workflows/container.yml

@@ -29,26 +29,10 @@ jobs:
       - uses: docker/metadata-action@v4
         id: meta
         with:
-          images: |
-            ${{ github.repository }}
-            ghcr.io/${{ github.repository }}
-          tags: |
-            type=semver,pattern={{version}}
-            type=edge
           labels: |
-            org.opencontainers.image.title=Mg
-            org.opencontainers.image.description=Micro Emacs text editor from OpenBSD
-            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 }}/
       - uses: docker/setup-qemu-action@v2
       - uses: docker/setup-buildx-action@v2
-      - name: Log in to GHCR
-        uses: docker/login-action@v2
-        with:
-          registry: ghcr.io
-          username: ${{ github.repository_owner }}
-          password: ${{ secrets.GITHUB_TOKEN }}
       - name: Log in to Docker Hub
         uses: docker/login-action@v2
         with:
@@ -57,8 +41,6 @@ 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 }}
@@ -69,10 +51,10 @@ jobs:
             push-by-digest=true,
             push=true,
             annotation-manifest-descriptor.org.opencontainers.image.title=Mg,
-            annotation-manifest-descriptor.org.opencontainers.image.description=Micro Emacs text editor for ${{ matrix.platform }},
+            annotation-manifest-descriptor.org.opencontainers.image.description=Micro Emacs text editor,
             annotation-manifest-descriptor.org.opencontainers.image.url=https://github.com/troglobit/mg,
             annotation-manifest-descriptor.org.opencontainers.image.licenses=Unlicense,
-            annotation-manifest-descriptor.org.opencontainers.image.revision=${GITHUB_SHA}
+            annotation-manifest-descriptor.org.opencontainers.image.revision=${{ github.sha }}
       - name: Export digest
         run: |
           mkdir -p /tmp/digests

Dockerfile

@@ -18,6 +18,11 @@ RUN ./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var CFLAGS=-sta
 RUN make install-strip
 
 FROM scratch
+LABEL org.opencontainers.image.title         "Mg"
+LABEL org.opencontainers.image.description   "Micro Emacs text editor from OpenBSD"
+LABEL org.opencontainers.image.documentation "https://man.troglobit.com/man1/mg.1.html"
+LABEL org.opencontainers.image.url           "https://github.com/troglobit/mg"
+LABEL org.opencontainers.image.licenses      "Unlicense"
 
 COPY --from=0 /usr/bin/mg /usr/bin/mg
 COPY --from=0 /usr/share/doc/mg /usr/share/doc/mg