Docker, can't reach “rails server” development from localhost:3000 using docker flag -p 3000:3000

Question

I\'m trying to use docker with rails, building an entire stack inside one container. My endgoal is to have an nginx/memcached/unicorn/rails/postgres stack with runit as the

Answer 1

This was actually caused by boot2docker. See this page for more info: https://github.com/boot2docker/boot2docker/blob/master/doc/WORKAROUNDS.md

TLDR

Portforwarding only works with a hack on boot2docker currently. You need to run the following command (and keep it running):

boot2docker ssh -L 8080:localhost:80

Where 80 is the exposed port on the container and 8080 is the port you want to access it from on your host.