How to use apt-get install in environments

When building an environment, running apt-get install without the -y flag causes the following error:

The command '/bin/sh -c sudo apt-get install <package>' returned a non-zero code: 100
ERROR: ProgressMessage{id=null, status=null, stream=null,
error=The command '/bin/sh -c sudo apt-get install <package>' returned a non-zero code: 100, progress=null,
progressDetail=null}

The error message suggests a connectivity issue, but the actual cause is the missing -y confirmation switch. Without -y, apt-get waits for interactive input during the install prompt, which causes the non-zero exit code.

Fix: add the -y flag to apt-get install

Add the -y confirmation switch to your command so apt-get runs in non-interactive mode:

USER root
RUN apt-get install -y <package>

Last modified on October 12, 2026

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