Add org.opencontainers.image.* labels to Dockerfiles

[marccarre]

Why? What?

• This should ultimately help for image-to-code back references.
• org.label-schema.* labels are now deprecated, in favour of org.opencontainers.image.* labels.
  See also: https://github.com/opencontainers/image-spec/blob/master/annotations.md#back-compatibility-with-label-schema
• Git revision (git rev-parse HEAD) is now injected at docker build time.
• MAINTAINER is deprecated, in favour of the maintainer label, which can be added once Create GOVERNANCE.md and MAINTAINERS #823 has been merged, alongside with:
  • org.opencontainers.image.vendor and
  • org.opencontainers.image.authors.

Testing

$ docker inspect quay.io/weaveworks/cortex-alertmanager
[
    {
        [...]
        "ContainerConfig": {
            [...]
            "Labels": {
            "Labels": {
                "org.opencontainers.image.revision": "05830bf3a6bd0186b4ad444241084b526a7df25c",
                "org.opencontainers.image.source": "https://github.com/weaveworks/cortex/tree/master/cmd/alertmanager",
                "org.opencontainers.image.title": "alertmanager"
            }
[...]

[tomwilkie]

Out of interest, are there any tools that actually consume these labels?

[marccarre]

@tomwilkie, there at least the one I'm working on at the moment.

[tomwilkie]

Looks cool!