How to get IP address of running docker container

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If you don’t want to map ports from your host to the container you can access directly to the docker range ip for the container. This range is by default only accessed from your host. You can check your container network data doing:

docker inspect <containerNameOrId>

Probably is better to filter:

docker inspect <containerNameOrId> | grep '"IPAddress"' | head -n 1

Usually, the default docker ip range is 172.17.0.0/16. Your host should be 172.17.0.1 and your first container should be 172.17.0.2 if everything is normal and you didn’t specify any special network options.

EDIT
Another more elegant way using docker features instead of “bash tricking”:

docker inspect -f "{{ .NetworkSettings.IPAddress }}" <containerNameOrId>

EDIT2
For modern docker engines, now it is this way (thanks to the commenters!):

docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' <containerNameOrId>

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