fix: /run/gatus is created by systemd service on every boot

debian/gatus/DEBIAN/postinst

@@ -1,6 +1,4 @@
 adduser --group --system gatus
 mkdir -p /var/lib/gatus
 chown -R gatus: /var/lib/gatus
-mkdir -p /var/run/gatus
-chown -R gatus: /var/run/gatus
 systemctl daemon-reload

debian/gatus/etc/gatus/gatus.yaml

@@ -1,6 +1,6 @@
 use-privileged-ping: true
 web:
-  socket: /var/run/gatus/gatus.sock
+  socket: /run/gatus/gatus.sock
 storage:
   type: "sqlite"
   path: "/var/lib/gatus/gatus.sqlite"

debian/gatus/etc/systemd/system/gatus.service

@@ -8,6 +8,8 @@ Requires=network-online.target
 Type=exec
 User=gatus
 Group=gatus
+RuntimeDirectory="gatus"
+RuntimeDirectoryMode=0770
 Environment=GATUS_CONFIG_PATH=/etc/gatus/gatus.yaml
 ExecStart=/usr/local/bin/gatus
 TimeoutStopSec=5s