Create the systemd.service for Debian which respects /etc/default/docker

Signed-off-by: onorua <onorua@x.dev>

contrib/init/systemd-debian/REVIEWERS

@@ -0,0 +1,3 @@
+Lokesh Mandvekar <lsm5@fedoraproject.org> (@lsm5)
+Brandon Philips <brandon.philips@coreos.com> (@philips)
+Jessie Frazelle <jess@docker.com> (@jfrazelle)

contrib/init/systemd-debian/docker.service

@@ -0,0 +1,16 @@
+[Unit]
+Description=Docker Application Container Engine
+Documentation=http://docs.docker.com
+After=network.target docker.socket
+Requires=docker.socket
+
+[Service]
+EnvironmentFile=/etc/default/docker
+ExecStart=/usr/bin/docker -d -H fd:// $DOCKER_OPTS
+MountFlags=slave
+LimitNOFILE=1048576
+LimitNPROC=1048576
+LimitCORE=infinity
+
+[Install]
+WantedBy=multi-user.target

contrib/init/systemd-debian/docker.socket

@@ -0,0 +1,12 @@
+[Unit]
+Description=Docker Socket for the API
+PartOf=docker.service
+
+[Socket]
+ListenStream=/var/run/docker.sock
+SocketMode=0660
+SocketUser=root
+SocketGroup=docker
+
+[Install]
+WantedBy=sockets.target