userns-remap
There are 4 repositories under userns-remap topic.
giuseppe/become-root
minimal tool for creating a new user namespace with multiple UIDs/GIDs mapped inside
Daniel-Abrecht/usernsexec
Execute command in new user namespace, setting uid and gid mapping using shadows newuidmap & newgidmap. This doesn't extend the permissions of a process, but can be useful for faking root or bootstrapping an fs without root privileges.
nicdesousa/docker-userns-enforcement-plugin
Docker User Namespaces Enforcement Plugin
cbuschka/docker-user-adapting-entrypoint
Proof of Concept - User adapting Entrypoint for Docker