Hi there.
I’ve been building a docker image for months, and using it with a compose file to publish its ports (3000) to localhost.
Now it doesn’t work, the only way to see my app is to find the network used by docker (e.g. 172.19.0.3:3000) and on this interface it indeed shows up. I can’t find what has changed. Maybe I am doing something wrong (without noticing the change in my protocol) or maybe there has been a change in docker’s way of handling that…
The compose file specifies the port mapping:
ports:
- "3000:3000"
When using the docker command flags (e.g. -p "3000:3000") the behaviour is the same: I can access the app on 172.x.x.x:300 but not on the host’s interface (e.g. localhost:3000).
It worked well until last week. What happened?
P.S.: the image is open-source btw, it can be found here: https://hub.docker.com/r/bbaldassari/
Any help would be appreciated. Thanks, have a great day! 
–
boris