[Unit]
Description=Squid Web Proxy Server
Documentation=man:squid(8)
After=network.target network-online.target nss-lookup.target

[Service]
Type=forking
PIDFile=/opt/squid/var/run/squid.pid
ExecStart=/opt/squid/sbin/squid
ExecStop=/opt/squid/sbin/squid -k shutdown

[Install]
WantedBy=multi-user.target