docker run -d -p 8080:8080 plantuml/plantuml-server:jetty
node bin/index.js --puml-server-url http://localhost:8080
Just note this server url would need to be public not localhost for rendering the inline images in markdown but if you just want to use links should still work fine with localhost
See: https://github.com/danielyaa5/puml-for-markdown/issues/2 I was able to test this with a docker instance https://github.com/plantuml/plantuml-server.
Here's what I ran
Just note this server url would need to be public not localhost for rendering the inline images in markdown but if you just want to use links should still work fine with localhost