Broken docker container

Hi,

I am using a Concourse version: v5.8.1. One of my pipeline has strange docker container issue.

+ mvn -Dmaven.repo.local=../maven-cache -B clean test
ls: cannot access '/usr/bin/mvn': Operation not permitted
Error: Could not find or load main class org.codehaus.plexus.classworlds.launcher.Launcher
Caused by: java.lang.ClassNotFoundException: org.codehaus.plexus.classworlds.launcher.Launcher
+ [[ 1 -eq 0 ]]
+ echo 'Some issue occurred running the tests. See output above for details.'
Some issue occurred running the tests. See output above for details.

When I intercept this container, all files and directories have question marks instead of real permissions, like below:

root@eeaa0378-50c7-4c69-4025-6e897f23315d:~# ls -la
ls -la
ls: cannot access '.': Operation not permitted
ls: cannot access '..': Operation not permitted
ls: cannot access '.bashrc': Operation not permitted
ls: cannot access '.cache': Operation not permitted
ls: cannot access '.config': Operation not permitted
ls: cannot access '.profile': Operation not permitted
ls: cannot access '.bash_history': Operation not permitted
total 0
d????????? ? ? ? ?            ? .
d????????? ? ? ? ?            ? ..
-????????? ? ? ? ?            ? .bash_history
-????????? ? ? ? ?            ? .bashrc
d????????? ? ? ? ?            ? .cache
d????????? ? ? ? ?            ? .config
-????????? ? ? ? ?            ? .profile
root@eeaa0378-50c7-4c69-4025-6e897f23315d:~#
root@eeaa0378-50c7-4c69-4025-6e897f23315d:~# ls /
ls /
ls: cannot access '/': Operation not permitted

I am using a custom docker image for the container, but it is functioning without such behavior when running it locally.

Could you please suggest what/where to look at?
Thank you!