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Last active February 12, 2022 00:48
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Enable singularity v3 container --fakeroot on debian
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README.md

Singularity version 3 container --fakeroot

The --fakeroot option to some of the singularity 3 commands requires two things to work

  • Properly configured UID and GID mapping in /etc/sub[ug]id. This is done by default on debian stretch (9) and buster (10) and other recent distributions.
  • The aility to create a process in a user namespace. On debian, this requires setting kernel.unprivileged_userns_clone = 1 in /etc/sysctl.conf.
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