/usr/share/ltsp/plugins/ltsp-build-client/Fedora/010-mount-proc is in ltsp-server 5.5.7-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | # This file is not desired on Fedora.
# chroot-creator handles /proc mount and unmount itself.
|