Create an additional, replacable "latest" tag with stable images
Reviewers: @bwrona @kmochocki
This MR provides an additional "latest" tag when pushing dockerized stable Clive images.
This will make it easier to run the latest version, and in our README
file we can provide a single statement like
docker pull register.gitlab.syncad.com/hive/clive/testnet-instance-develop:latest
instead of referencing to the commit sha like
docker pull registry.gitlab.syncad.com/hive/clive/testnet-instance-develop:testnet-instance-9d5ece9c
Of course, the old tag with sha included will still be pushed.
Example test job: https://gitlab.syncad.com/hive/clive/-/jobs/622138