[MNG-6880] Maven creates `?/m2` dir in pwd if run in Docker image with custom UID

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Invalid
• Environment: Docker
• Assignee: Unassigned
• Reporter: Florian Wilhelm
• Created: 26/Mar/20 10:52
• Updated: 30/Mar/20 21:00
• Resolved: 30/Mar/20 21:00

Description

Hi,

I'm not sure if this is a bug, but I consider the result problematic. What happens is that if you run maven in a Docker container with a custom UID (1000 in our case), the value of the system property user.home is ? which leads to maven creating a m2 dir in the current working directory. We need to use uid 1000 to get proper permissions in Jenkins (on the host).

I've created a reproducer here https://github.com/fwilhe/mvn-user-home-repro

If you try to build the docker image, it will exit with code 1 if a ? directory was created. I would expect this directory not to be created, but rather use /tmp.