tbootstrap — newroot as podman image

Build a podman image from the installed rootfs (NEWROOT, default $HOME/newroot) and run it.

Build all example

podman run --rm -v /home/tlnx:/root -w /root/rpms tlnx-build tbootstrap/tbootstrap.sh install_all

Enter newroot without root

Instead of a privileged chroot, use user+mount namespaces:

unshare -Ur /usr/sbin/chroot newroot

Run from the directory that contains newroot (e.g. $HOME), or pass an absolute path.

Build image

From /home/tlnx/rpms (host):

tbootstrap/tbootstrap.sh image

Defaults: NEWROOT=$HOME/newroot, tag TLNX_IMAGE=tlnx:newroot. Override if needed:

NEWROOT=/path/to/rootfs TLNX_IMAGE=tlnx:latest tbootstrap/tbootstrap.sh image

Run container

Interactive shell (CMD is /bin/bash):

podman run -it --rm tlnx:newroot

One-shot command:

podman run --rm tlnx:newroot /bin/bash -c 'rpm -qa | sort'