Upon successful creating of release packages and testing their correctness, packages should be published so they can be installed and used.
Input for the step:
* artifacts from the previous steps
* version numbers and other metadata relevant for publishing
* "tokens" etc necessary to do the actual publishing
Publishing step includes:
* marking the source code versions released ("tagging" in git vocabulary)
* publishing tarball/zip artifacts to a defined repository (dedicated space on releases.wikimedia.org)
* publishing Docker image artifacts to a defined repository (Dockerhub)
* adding additional metadata ("tags") to published artifacts (if needed)
**Acceptance criteria**
[] Wikibase tarball package can be published to a dedicated space on releases.wikimedia.org
[] Mediawiki+Wikibase docker image can be published to wikibase Dockerhub
[] Respective branch of Wikibase code repository is tagged with the release label
[] Respective Wikibase docker image is tagged with the release label