I have a “docker build” command line that has been running fine for quite a while. We very recently changed the format of one part of what goes into the tag value, and now we’re seeing the following error:
invalid argument "host:port/namespace/project:dev-latest-release/19-06-18-REL" for "-t, --tag" flag: invalid reference format
Everything before “dev-latest” is elided. We recently changed from “19.06.18.REL” to “19-06-18-REL”. I find it hard to believe this is what is causing this, but it’s the only thing that has changed.