Item14086: Add systemd service file

Adds systemd service file to start up foswiki automatically.

Note that the user still has to replace the value for 'WorkingDirectory' as that setting does not support variable substitution.
A work around could be that we start a script that starts foswiki.fcgi in the right working directory.

FastCGIEngineContrib/tools/systemd/foswiki-fastcgi.service

@@ -0,0 +1,43 @@
+# SystemD start file for Foswiki
+#
+# Note that you need to replace the path in 'WorkingDirectory' 
+# to suite your needs if you don't use the default path
+# as there is no variable substitution possible for that setting
+
+[Unit]
+Description=Foswiki
+
+[Service]
+Environment=FOSWIKI_ROOT=/var/www/foswiki
+Environment=FOSWIKI_FCGI=foswiki.fcgi
+Environment=FOSWIKI_BIND=127.0.0.1:9000
+Environment=FOSWIKI_CHILDREN=3
+Environment=FOSWIKI_MAX_REQUESTS=-1
+Environment=FOSWIKI_MAX_SIZE=250000
+Environment=FOSWIKI_CHECK_SIZE=10
+Environment=FOSWIKI_QUIET=true
+Environment=FOSWIKI_PIDFILE=/var/run/foswiki.pid
+
+# Optional, overrides settings above
+EnvironmentFile=-/etc/default/foswiki
+
+# Doesn't seem to support variable substitution. Should be ${FOSWIKI_ROOT}/bin/
+WorkingDirectory=/var/www/foswiki/bin/
+
+# Starts foswiki fcgi service
+ExecStart=/usr/bin/perl ${FOSWIKI_ROOT}/bin/${FOSWIKI_FCGI} \
+        -n $FOSWIKI_CHILDREN \
+        -l $FOSWIKI_BIND \
+        -p $FOSWIKI_PIDFILE \
+        -c $FOSWIKI_CHECK_SIZE \
+        -x $FOSWIKI_MAX_REQUESTS \
+        -s $FOSWIKI_MAX_SIZE \
+        -d
+
+Type=forking
+PIDFile=$FOSWIKI_PIDFILE
+Restart=always
+SyslogIdentifier=foswiki
+
+[Install]
+WantedBy=multi-user.target