[K8S] Support custom uid on creating docker image #725
Description
Is your feature request related to a problem? Please describe.
We should avoid using root to run celeborn in the container, for security purpose.
Describe the solution you'd like
Introduce a build arg ARG celeborn_uid=185 in Dockerfile, 185 is chosen as default because of apache/spark#23017
Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.
/cc @who-need-to-know
/assign @who-can-help-you