Jk init.ini

Default Ubuntu 18.04 LTS:

cat /etc/jailkit/jk_init.ini
[uidbasics]
# this section probably needs adjustment on 64bit systems
# or non-Linux systems
comment = common files for all jails that need user/group information
paths = /lib/libnsl.so.1, /lib64/libnsl.so.1, /lib/libnss*.so.2, /lib64/libnss*.so.2, /lib/i386-linux-gnu/libnsl.so.1, /lib/i386-linux-gnu/libnss*.so.2, /lib/x86_64-linux-gnu/libnsl.so.1, /lib/x86_64-linux-gnu/libnss*.so.2, /lib/arm-linux-gnueabihf/libnss*.so.2, /lib/arm-linux-gnueabihf/libnsl*.so.1, /etc/nsswitch.conf, /etc/ld.so.conf
# Solaris needs
# paths = /etc/default/nss, /lib/libnsl.so.1, /usr/lib/nss_*.so.1, /etc/nsswitch.conf

[netbasics]
comment = common files for all jails that need any internet connectivity
paths = /lib/libnss_dns.so.2, /lib64/libnss_dns.so.2, /lib/libnss_mdns*.so.2, /etc/resolv.conf, /etc/host.conf, /etc/hosts, /etc/protocols, /etc/services
# on Solaris devices /dev/udp and /dev/tcp might be needed too, not sure

[logbasics]
comment = timezone information and log sockets
paths = /etc/localtime
need_logsocket = 1
# Solaris does not need logsocket
# but needs
# devices = /dev/log, /dev/conslog

[jk_lsh]
comment = Jailkit limited shell
paths = /usr/sbin/jk_lsh, /etc/jailkit/jk_lsh.ini
users = root
groups = root
includesections = uidbasics, logbasics

[limitedshell]
comment = alias for jk_lsh
includesections = jk_lsh

[cvs]
comment = Concurrent Versions System
paths = cvs
devices = /dev/null

[git]
comment = Fast Version Control System
paths = /usr/bin/git*, /usr/lib/git-core, /usr/bin/basename, /bin/uname, /usr/bin/pager
includesections = editors, perl

[scp]
comment = ssh secure copy
paths = scp
includesections = netbasics, uidbasics
devices = /dev/urandom

[sftp]
comment = ssh secure ftp
paths = /usr/lib/sftp-server, /usr/libexec/openssh/sftp-server, /usr/lib/misc/sftp-server, /usr/libexec/sftp-server, /usr/lib/openssh/sftp-server
includesections = netbasics, uidbasics
devices = /dev/urandom, /dev/null
# on solaris
#paths = /usr/lib/ssh/sftp-server

[ssh]
comment = ssh secure shell
paths = ssh
includesections = netbasics, uidbasics
devices = /dev/urandom, /dev/tty, /dev/null

[rsync]
paths = rsync
includesections = netbasics, uidbasics

[procmail]
comment = procmail mail delivery
paths = procmail, /bin/sh
devices = /dev/null

[basicshell]
comment = bash based shell with several basic utilities
paths = /bin/sh, bash, ls, cat, chmod, mkdir, cp, cpio, date, dd, echo, egrep, false, fgrep, grep, gunzip, gzip, ln, ls, mkdir, mktemp, more, mv, pwd, rm, rmdir, sed, sh, sleep, sync, tar, touch, true, uncompress, zcat, /etc/motd, /etc/issue, /etc/bash.bashrc, /etc/bashrc, /etc/profile, /usr/lib/locale/en_US.utf8
users = root
groups = root
includesections = uidbasics

[midnightcommander]
comment = Midnight Commander
paths = mc, mcedit, mcview, /usr/share/mc
includesections = basicshell, terminfo

[extendedshell]
comment = bash shell including things like awk, bzip, tail, less
paths = awk, bzip2, bunzip2, ldd, less, clear, cut, du, find, head, less, md5sum, nice, sort, tac, tail, tr, sort, wc, watch, whoami
includesections = basicshell, midnightcommander, editors

[terminfo]
comment = terminfo databases, required for example for ncurses or vim
paths = /etc/terminfo, /usr/share/terminfo, /lib/terminfo

[editors]
comment = vim, joe and nano
includesections = terminfo
paths = joe, nano, vi, vim, /etc/vimrc, /etc/joe, /usr/share/vim

[netutils]
comment = several internet utilities like wget, ftp, rsync, scp, ssh
paths = wget, lynx, ftp, host, rsync, smbclient
includesections = netbasics, ssh, sftp, scp

[apacheutils]
comment = htpasswd utility
paths = htpasswd

[extshellplusnet]
comment = alias for extendedshell + netutils + apacheutils
includesections = extendedshell, netutils, apacheutils

[openvpn]
comment = jail for the openvpn daemon
paths = /usr/sbin/openvpn
users = root,nobody
groups = root,nogroup
#includesections = netbasics
devices = /dev/urandom, /dev/random, /dev/net/tun
includesections = netbasics, uidbasics
need_logsocket = 1

[apache]
comment = the apache webserver, very basic setup, probably too limited for you
paths = /usr/sbin/apache
users = root, www-data
groups = root, www-data
includesections = netbasics, uidbasics

[perl]
comment = the perl interpreter and libraries
paths = perl, /usr/lib/perl, /usr/lib/perl5, /usr/share/perl, /usr/share/perl5

[xauth]
comment = getting X authentication to work
paths = /usr/bin/X11/xauth, /usr/X11R6/lib/X11/rgb.txt, /etc/ld.so.conf

[xclients]
comment = minimal files for X clients
paths = /usr/X11R6/lib/X11/rgb.txt
includesections = xauth

[vncserver]
comment = the VNC server program
paths = Xvnc, Xrealvnc, /usr/X11R6/lib/X11/fonts/
includesections = xclients

[ping]
comment = Ping program
paths_w_setuid = /bin/ping

#[xterm]
#comment = xterm
#paths = /usr/bin/X11/xterm, /usr/share/terminfo, /etc/terminfo
#devices = /dev/pts/0, /dev/pts/1, /dev/pts/2, /dev/pts/3, /dev/pts/4, /dev/ptyb4, /dev/ptya4, /dev/tty, /dev/tty0, /dev/tty4