Expose Docker container to public ip

Question

I started an Ubuntu Docker container, installed ssh, run ssh with port 22 attached to it.

$ docker ps
CONTAINER ID   IMAGE          COMMAND             PORTS             
f580e36aa7f0   martin/ssh2    /usr/sbin/sshd -D   0.0.0.0:49154->22/tcp

From my server I can now ssh my container. It work fine!

ssh root@172.17.42.1 -p 49154

But how can I ssh my container from the outside word?
(my server is running in my local network on 192.168.1.8/24)

• Should I install a load balancer who redirect 192.168.1.8:2222 to 172.17.42.1:49154?
  
• Should I need pipework for that? How?
  
• Can someone point me in the right decision?

Answer 1

You should be able to connect to your container at 192.168.1.8:49154 already.

Your ssh container is bind to 0.0.0.0 (=any interfaces) and port 49154 so it means container port 22 is accessible on any interface on your host at port 49154.