How to run arbitrary commands like `apt-get update`?

[obarat]

Hello, I'm using JIB to build my multi-architecture base image. I'm following this instructions and it is working well. As part of the Dockerfile that I'm converting to JIB - using Maven, it was running the command apt-get update. How can I run the same command with JIB? Is it possible?

Thanks!

[zhumin8]

Hi, glad you found helpful instructions. Does this FAQ section help in your case?

[obarat]

Ah thanks for the link, I didn't see that before (I just searched in issues). However that doesn't address the issue I have. I want to use only JIB to build my base image, not a Dockerfile. Is this not possible?

[sschuberth]

Chiming in here, no, this is not possible @obarat (to the best of my knowledge). JIB cannot run arbitrary commands as part of its image build process. Instead, you need to move those commands to a base image that you create otherwise, and make JIB use that base image.