Add initial systemd scripts

Signed-off-by: Eli Uriegas <eli.uriegas@docker.com>
Upstream-commit: 7b31f87ffd8115f8226f68b788f5b36db53981f6
Component: packaging

components/packaging/systemd/docker.service

@@ -0,0 +1,34 @@
+[Unit]
+Description=Docker Application Container Engine
+Documentation=https://docs.docker.com
+After=network-online.target docker.socket firewalld.service
+Wants=network-online.target
+Requires=docker.socket
+
+[Service]
+Type=notify
+# the default is not to use systemd for cgroups because the delegate issues still
+# exists and systemd currently does not support the cgroup feature set required
+# for containers run by docker
+ExecStart=/usr/bin/dockerd -H fd://
+ExecReload=/bin/kill -s HUP $MAINPID
+LimitNOFILE=1048576
+# Having non-zero Limit*s causes performance problems due to accounting overhead
+# in the kernel. We recommend using cgroups to do container-local accounting.
+LimitNPROC=infinity
+LimitCORE=infinity
+# Uncomment TasksMax if your systemd version supports it.
+# Only systemd 226 and above support this version.
+#TasksMax=infinity
+TimeoutStartSec=0
+# set delegate yes so that systemd does not reset the cgroups of docker containers
+Delegate=yes
+# kill only the docker process, not all processes in the cgroup
+KillMode=process
+# restart the docker process if it exits prematurely
+Restart=on-failure
+StartLimitBurst=3
+StartLimitInterval=60s
+
+[Install]
+WantedBy=multi-user.target

components/packaging/systemd/docker.service.rpm

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+[Unit]
+Description=Docker Application Container Engine
+Documentation=https://docs.docker.com
+After=network-online.target firewalld.service
+Wants=network-online.target
+
+[Service]
+Type=notify
+# the default is not to use systemd for cgroups because the delegate issues still
+# exists and systemd currently does not support the cgroup feature set required
+# for containers run by docker
+ExecStart=/usr/bin/dockerd
+ExecReload=/bin/kill -s HUP $MAINPID
+# Having non-zero Limit*s causes performance problems due to accounting overhead
+# in the kernel. We recommend using cgroups to do container-local accounting.
+LimitNOFILE=infinity
+LimitNPROC=infinity
+LimitCORE=infinity
+# Uncomment TasksMax if your systemd version supports it.
+# Only systemd 226 and above support this version.
+#TasksMax=infinity
+TimeoutStartSec=0
+# set delegate yes so that systemd does not reset the cgroups of docker containers
+Delegate=yes
+# kill only the docker process, not all processes in the cgroup
+KillMode=process
+# restart the docker process if it exits prematurely
+Restart=on-failure
+StartLimitBurst=3
+StartLimitInterval=60s
+
+[Install]
+WantedBy=multi-user.target

components/packaging/systemd/docker.socket

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+[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