Does anyone have a good DSL tool for diagrams showing services exposing ports and connecting to other services and ports? Maybe even showing hosts, docker conta

Does anyone have a good DSL tool for diagrams showing services exposing ports and connecting to other services and ports? Maybe even showing hosts, docker containers, networks and firewalls? This is something that I tend to draw a lot at work, but it's always ad hoc and doesn't follow any formal specification. I tried some tools but keep coming back to doing it my way in ASCII with asciiflow.com or Google Docs drawings.