drone/drone — pull request #593 by epipho (2014-10-18 23:09:32+00:00)
Title: Allow docker publish to add multiple tags

Fully backwards compatible.

- Added custom_tags string array to allow multiple tags to be applied. If both custom_tag and custom_tags are specified they will be concatenated.
- Only tags that are created are pushed to the repository rather than the whole repo
- Docs PR is incoming.