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Eddy-Barraud/expose-docker-port.md

Created April 13, 2020 13:48
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expose-docker-port.md

To expose a port inside a running docker container, you can create a temporary container connected to the same network. We will use socat to link the desired port to another exposed port.

docker run --rm --net some-network -p [exposed-port]:1234 verb/socat TCP-LISTEN:1234,fork TCP-CONNECT:[container-IP]:[container-port]

Then, for example, you can ssh forward this port to your localhost 80 port: ssh -N -L 80:127.0.0.1:[exposed-port] [server-IP]

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