label-schema.org labels are deprecated

[The-Loeki]

The label-schema.org labels are deprecated in favour of the Open Container Specification ones.
The builtin label-schema.org labels are therefore deprecated as well; I can hack up a PR, but we'd need to specify the behaviour regarding PLUGIN_LABELS and PLUGIN_CUSTOM_LABELS and not collide with #204 / #192 (where this was already discussed as well)

Related

• Support optionally label-schema.org labels #134
• Integrated label-schema.org labels #135
• Add support for non label-schema labels #180
• Add DRONE_BUILD_NUMBER to container labels #192
• Add io.drone.build-number label to built containers. Closes #192 #204

Refs

• Add DRONE_BUILD_NUMBER to container labels #192 (comment)
• https://github.com/label-schema/label-schema.org#label-schemaorg
• https://github.com/opencontainers/image-spec/blob/master/annotations.md

[tboerger]

I'm not entirely sure if we just follow the new definition or if we just define some labels in the io.drone namespace similar to the build number mentioned in the above pull request.

[The-Loeki]

well that seems a lot like the DRONE_ vs CI_ variables :)

I like having standarized ones as much as possible for my 5c, but as you mention in your thread, I'm not really sure where they are used (and thus may break if we'd change the label-schema.org ones for org.opencontainers ones)

[xoxys]

IMO there should be an option to disable the entire automatic label handling.