Add standard OCI labels

This adds the standardized OCI labels for our image so downstream tools
will be able to inspect/extract these mechanically.

Reference: https://github.com/opencontainers/image-spec/blob/master/annotations.md#pre-defined-annotation-keys

Signed-off-by: Daniel Hiltgen <daniel.hiltgen@docker.com>
Upstream-commit: 58e5b9c98134930c00ad678bc0de454b490dd7b6
Component: packaging

components/packaging/image/Dockerfile.engine

@@ -72,8 +72,21 @@ RUN . /binaries-commits && \
 
 # Final docker image
 FROM scratch
+ARG VERSION
+ARG GITCOMMIT
+ARG BUILDTIME
 COPY --from=dockerd-builder /sbin/dockerd /sbin/
 COPY --from=proxy-builder /sbin/docker-proxy /sbin/
 COPY --from=init-builder /sbin/docker-init /sbin/
 COPY --from=runc-builder /usr/local/sbin/runc /sbin/
+LABEL \
+    org.opencontainers.image.authors="Docker Inc." \
+    org.opencontainers.image.created="${BUILDTIME}" \
+    org.opencontainers.image.documentation="https://docs.docker.com/" \
+    org.opencontainers.image.licenses="Apache-2.0" \
+    org.opencontainers.image.revision="${GITCOMMIT}" \
+    org.opencontainers.image.url="https://www.docker.com/products/docker-engine" \
+    org.opencontainers.image.vendor="Docker Inc." \
+    org.opencontainers.image.version="${VERSION}"
+
 ENTRYPOINT ["/sbin/dockerd"]