Overview of changes
- Adjust the grep match pattern to be more specific
- Don't exit with a non-zero code from 'toolbox list -i'
- Expose a few more host locations inside the container under /run/host
- Give access to the system Flatpak directory
- Give access to the system libvirt instance
- Mount /run/media only if it is available
- Preserve the host's ulimits when creating toolbox containers
- Work around 'podman exec' resetting the terminal size to 80x24