[docker] name for build tag

[rfranco]

When change name in Docker that changes the entrypoint in Dockerfile too.
Maybe could has a new setting call dockerTag likely as dockerRepository.

[fiadliel]

The entrypoint is changed, because the name of the script generated by sbt-native-packager depends on name (via normalizedName), and the entrypoint points at that script. Having an entry point other than the script is currently not supported (and I'm not sure what kind of API should be exposed). What kind of use case are you thinking of?

The tag name is generated from version in Docker, so you can change the tag by changing that value. e.g. if you want the tag to start with a 'v', you can put this in your build.sbt:

version in Docker := "v" + (version in Docker).value

[rfranco]

My use case is, i have a project with name "foo-api" so the default tag will be foo-api:$version.
But i'd like to be foo/api:$version for that change the name in Docker to "foo/api" then that change the Entrypoint too.
So i think need to have other behavior, i did a workaround and create a new Keys

val dockerTag = SettingKey[Option[String]]("dockerTag", "Tag for build Docker image")

dockerTarget <<= (dockerRepository, dockerTag, normalizedName, version) map {
        (repo, tag, name, version) =>
          repo.map(_ + "/").getOrElse("") + tag.getOrElse(name) + ":" + version
      }

That solve my problem for now.

[fiadliel]

I can see that being useful... I'd like to see what the final result of #250 is, before deciding exactly how it should change.

[muuki88]

@rfranco This should be possible now in the next 0.8.0-M1 release.

packageName in Docker := "foo/api"

[muuki88]

@rfranco Does this work now for you? If yes, we can close this one.