When parallel builds for different environments run on the same host at
the same time then the one that finishes last overwrites the Docker
image that was built first, since the commit will be the same.
"So the last shall be first, and the first last: for many be called, but few chosen."
Matthew 20:16, King James Bible
Signed-off-by: Jakub Sokołowski <jakub@status.im>
This is the first and most basic version of a Jenkinsfile we can use.
Since we can't just hardcode things like docker name, tag, or
credentials for pushing to a Docker registry it needs to be a parameter.
Signed-off-by: Jakub Sokołowski <jakub@status.im>