docker.install


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post_install() {
	grep -q '^docker:' /etc/group || groupadd --system docker
	systemctl daemon-reload
	echo "To make Docker fully functional, consider performing the following actions:"
	echo "  + Start the docker daemon:"
	echo "      $ sudo systemctl start docker"
	echo "  + (OPTIONAL) Start the docker daemon at boot:"
	echo "      $ sudo systemctl enable docker"
	echo "  + Add your user to the docker group to run the docker client without sudo:"
	echo "      $ sudo usermod -a -G docker <username>"
	echo "    Login again for the change to take effect or run the following command"
	echo "    for a change affecting only the current shell:"
	echo "      $ newgrp docker"
	echo "  + Enable IPv4 forwarding to allow internet connections inside the containers."
	echo "    See /etc/sysctl.d/docker.conf for WARNING and instructions."
}

pre_upgrade() {
	systemctl stop docker
}

post_upgrade() {
	systemctl daemon-reload
}

pre_remove() {
	systemctl stop docker
	grep -q '^docker:' /etc/group && groupdel docker
}

post_remove() {
	systemctl daemon-reload
}