/usr/share/lxc/hooks/squid-deb-proxy-client is in liblxc-common 3.0.1-0ubuntu1~18.04.2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 | #!/bin/sh
#
# Make the cloned container aware of squid-deb-proxy settings at start.
#
# Copyright © 2014 Christopher Glass.
#
# This library is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2, as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
# When starting a container, inject the squid-deb-proxy-client proxy
# address in the container's apt configuration.
# This script should be added to templates as a pre-start script, such as:
#lxc.hook.pre-start=/usr/share/lxc/hooks/squid-deb-proxy-client
discovery_script=/usr/share/squid-deb-proxy-client/apt-avahi-discover
proxy_file=/etc/apt/apt.conf.d/50squid-deb-proxy
container_proxy_file=$LXC_ROOTFS_PATH$proxy_file
if [ -f $proxy_file ]; then
# The host has a proxy file - let's propagate the config to the guest.
cat $proxy_file > $container_proxy_file
exit 0
fi
if [ ! -f $discovery_script ]; then
# There is no squid-deb-proxy-client package installed. Do nothing.
exit 0
fi
proxy_line=$($discovery_script) #XXX: Could be multiline?
if [ -n "$proxy_line" ]; then
doc="# Detected at container start from the host's squid-deb-proxy-client"
echo "Acquire::http::proxy \"$proxy_line\"; $doc" > $container_proxy_file
else
if [ -f $proxy_file ]; then
rm $proxy_file
fi
fi
exit 0
|