Note Please read the common steps first. Apptainer (formerly known as Singularity) provides three modes for running containers as a non-root user: User namespace mode (the default since version 1.1.0, or apptainer exec --userns with suid installation) Fakeroot mode (apptainer exec --fakeroot) Setuid mode (install extra apptainer-suid component) The first mode does not use setuid root, so it is in the scope of Rootless Containers. In fact, it does not even use a privileged helper the way other...
