Topology:

	     infrastructure  	 services
	    +---------------+ 	+---------------+	

		 ns					 ssh

	>--- gate				 openvpn

		 proxy				 nextcloud

							 ...

Options:

• CT_GROUP=1000 (range: 1000-1999) Set the network base ID

• CT_INFRASTRUCTURE=100..199 Set the infrastructure base id

• CT_SERVICES=200..299

• CT_TEMPLATES=900..999