postinst is in docker.io 1.10.3-0ubuntu6.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
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set -e
case "$1" in
configure)
if [ -z "$2" ]; then
addgroup --system docker
fi
;;
abort-*)
# How'd we get here??
exit 1
;;
*)
;;
esac
# Automatically added by dh_systemd_enable
# This will only remove masks created by d-s-h on package removal.
deb-systemd-helper unmask docker.service >/dev/null || true
# was-enabled defaults to true, so new installations run enable.
if deb-systemd-helper --quiet was-enabled docker.service; then
# Enables the unit on first installation, creates new
# symlinks on upgrades if the unit file has changed.
deb-systemd-helper enable docker.service >/dev/null || true
else
# Update the statefile to add new symlinks (if any), which need to be
# cleaned up on purge. Also remove old symlinks.
deb-systemd-helper update-state docker.service >/dev/null || true
fi
# End automatically added section
# Automatically added by dh_systemd_enable
# This will only remove masks created by d-s-h on package removal.
deb-systemd-helper unmask docker.socket >/dev/null || true
# was-enabled defaults to true, so new installations run enable.
if deb-systemd-helper --quiet was-enabled docker.socket; then
# Enables the unit on first installation, creates new
# symlinks on upgrades if the unit file has changed.
deb-systemd-helper enable docker.socket >/dev/null || true
else
# Update the statefile to add new symlinks (if any), which need to be
# cleaned up on purge. Also remove old symlinks.
deb-systemd-helper update-state docker.socket >/dev/null || true
fi
# End automatically added section
# Automatically added by dh_installinit
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ]; then
if [ -x "/etc/init.d/docker" ]; then
update-rc.d docker defaults >/dev/null
fi
if [ -x "/etc/init.d/docker" ] || [ -e "/etc/init/docker.conf" ]; then
invoke-rc.d docker start || exit $?
fi
fi
# End automatically added section
# Automatically added by dh_installudev
if [ "$1" = configure ]; then
if [ -e "/etc/udev/rules.d/z80_docker.io.rules" ]; then
echo "Preserving user changes to /etc/udev/rules.d/80-docker.io.rules ..."
if [ -e "/etc/udev/rules.d/80-docker.io.rules" ]; then
mv -f "/etc/udev/rules.d/80-docker.io.rules" "/etc/udev/rules.d/80-docker.io.rules.dpkg-new"
fi
mv -f "/etc/udev/rules.d/z80_docker.io.rules" "/etc/udev/rules.d/80-docker.io.rules"
fi
fi
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper mv_conffile /etc/bash_completion.d/docker.io /etc/bash_completion.d/docker 1.2.0~ -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper mv_conffile /etc/default/docker.io /etc/default/docker 1.2.0~ -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper mv_conffile /etc/init.d/docker.io /etc/init.d/docker 1.2.0~ -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper mv_conffile /etc/init/docker.io.conf /etc/init/docker.conf 1.2.0~ -- "$@"
# End automatically added section
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