Running Mill in Docker

[charpov]

Is there a standard (or semi-standard) image to run Mill in Docker? I see this: https://hub.docker.com/r/nightscape/scala-mill/ but it includes Java and Scala, which shouldn't be needed. I would assume a simple Ubuntu + curl would do, but I don't want to have to maintain my own image if possible.

[charpov]

It looks like eclipse-temurin works (zulu-openjdk doesn't because it lacks curl), but I'm confused by the need for Java. Isn't Mill supposed to download its own Graal-based jvm?
In case someone else is looking for a solution, this is what I've settled on for now:

docker run --rm -v "$PWD:/work" -v milluser:/home/ubuntu -w /work --user ubuntu eclipse-temurin:21 sh mill ...

[charpov]

fedora also works:

docker run -it --rm -v "$PWD:/work" -w /work -v milluser:/root fedora sh mill ...

The trick seems to be to find an image that includes:

• cUrl
• glibc >= 2.39 (in order to run a native Mill without Java)

[charpov]

opensuse/leap also works and is a bit smaller. Also, the --no-daemon option seems to be needed to prevent a Subprocess failed error (despite a successful run) in 1 out of 10-20 runs (in my tests):

docker run --rm -it -v "$PWD:/work" -v milluser:/root -w /work opensuse/leap sh mill --no-daemon  ...