1. Deal with .purple directory. It holds the confiig files for pidgin

2. Startup warnings on Arch Linux:

(all fine here)
$ ./firejail
Parent pid 2495, child pid 2496
Child process initialized
$

(warnings)
$ ./firejail --overlay
Parent pid 2500, child pid 2501
OverlayFS configured in /home/ablive/.firejail/2500 directory
Warning: /var/lock not mounted
Warning: cannot find /var/run/utmp
Warning: failed to unmount /sys
Child process initialized
$ 

(warnings)
$ ./firejail --chroot=/media/mylinux
Parent pid 2503, child pid 2504
Warning: cannot find /var/run/utmp
Dropping all Linux capabilities and enforcing default seccomp filter
Warning: failed to unmount /sys
Child process initialized
$

3. default.profile creating problems for  --chroot, --private-home