Having a lot of trouble getting this to work with a local Docker instance… I am trying to basically do the following:

1. Run docker-compose up (on my machine or a remote)
2. Start a local iex and start :observer
3. Use the observer gui to connect to the remote host

I have figured out I need to do the following (but theres likely more I’m missing)

• Add :runtime_tools to the :extra_applications section of my mix.exs file.
• Expose the epmd port 4369 (maybe? I read somewhere it doesn’t allow external connections)
• Set the cookie and name of the app

I cannot get a Node.ping/1 from my local to the docker instance to go through. Connecting from within the docker instance works fine but it doesnt have the display necessary to run observer (and I don’t want to forward it because I plan to use this against a remote docker in prod and I dont want the observer gui included). What am I missing?

Here are some of the resources I’ve come across (none of which have been any help)