Connection refused on docker container

Question

I\'m new to Docker and trying to make a demo Rails app. I made a dockerfile that looks like this:

FROM ruby:2.2
MAINTAINER marko@codeship.com

# Install apt         


        

Answer 1

Command EXPOSE in your Dockerfile lets you bind container's port to some port on the host machine but it doesn't do anything else. When running container, to bind ports specify -p option.

So let's say you expose port 5000. After building the image when you run the container, run docker run -p 5000:5000 name. This binds container's port 5000 to your laptop/computers port 5000 and that portforwarding lets container to receive outside requests.

This should do it.