Whenn you run a lot of containers inside of a docker host, you can get lost of the forwarded ports. Let’s say you have 3 instances all exposing 3 ports: 22, 80 and 443. Docker will automatically assign ‘random’ port numbers like: ID ... PORTS 656eb7831dda ... 49162->22, 49163->80, 49164->443 ff2141eb218d ... 49159->22, 49160->80, 49161->443 54b9dfd5400c ... 49156->22, 49157->80, 49158->443 Now its