I am building a system to do c++ cmake builds primarily. I have Jenkins firing the dynamic pods, firing off shell scripts, etc. But, I can't get it to checkout the code. Now, my Jenkinsfile launches a container that the actual compile is supposed to be run in. That "sub" container is tuned to compile C++ code. Now, I have jenkins running scripts and such in that pod, but, when i try

checkout scm

im getting errors saying

ERROR: Error cloning remote repo 'origin'
hudson.plugins.git.GitException: Command "git fetch --tags --force --progress git@gitlab.com:mystuff/hello-world-cmake.git +refs/heads/*:refs/remotes/origin/*" returned status code 128:
stdout: 
stderr: No user exists for uid 1000080000
fatal: Could not read from remote repository.

my home folder is the standard /home/jenkins and the workspace folder is there, etc, etc. But, when I dump the /etc/passwd file, the jenkins user isn't listed in it.

Whats the appropriate way to add the jenkins user to that file?