Overview of changes
- Add a run command
- Create /run/.toolboxenv in 'toolbox enter' for identification
- Drop the Buildah dependency and the user-specific customized image
- Keep /etc/hosts and /etc/resolv.conf synchronized with the host
- Migrate existing containers when Podman is updated
- Retain the PS1 across su(1) and sudo(8)
- Set the Kerberos credential cache type only if Kerberos is available
- Support column(1) from bsdmainutils
- Support 'sudo' as default sudo(8) group
- Use a magenta hexagon instead of 🔹 in the PS1