Accessing host machine from within docker container

[kostyavyrodov]

What if your docker works with linux?

[qoomon]

Docker Container to access host ports => https://github.com/qoomon/docker-host.

[realdubb]

This worked ! Thank you

[clns]

Yes, same issue here and a valid use case.

[kensai]

As per this page you can also use host.docker.internal as a platform-agnostic way to reference the host.

[vaelek]

I thought you were going to be my hero… but as per the very next sentence on that page,

This is for development purpose and will not work in a production environment outside of Docker for Windows.

EDIT: I see the same comment in the Mac docs saying the same thing, all as of 18.03, however I have 18.07 and that does not resolve.

[ognyandim (Ognyan Dimitrov)]

Can you use environment variables for that matter? You can write any host information (the host ip) in a variable and pass it to the container the moment you run it.

How do I pass environment variables to Docker containers?

[gforghetti (Gary Forghetti)]

Yes, check this post.

Docker Container Get IP Address from host interfaces

Pass them as environment variables to the container. root@manager:~# hostname -I 10.0.2.15 172.28.128.3 172.17.0.1 172.18.0.1 You may want/need to be more selective on what IP addresses you actually pass. root@manager:~# docker container run -it --env "MY_IPS=$(hostname -I)" alpine:latest sh / # echo $MY_IPS 10.0.2.15 172.28.128.3 172.17.0.1 172.18.0.1 / #

[bilelhudson]

thank you ! you saved my week <3

[jason5lee]

My situation is to use the host HTTP Proxy in order to access the outer network for the build task.

[avbentem (Arjan)]

@kensai

As per this page you can also use host.docker.internal as a platform-agnostic way to reference the host.

Aside, for Linux this seems to require --add-host=host.docker.internal:host-gateway. Or use 172.17.0.1 instead of host.docker.internal.