Error accessing host port from docker container on ubuntu

Question

I'm trying to access a host port from a docker container running an OCaml stack. When I use the --net=host option when running the container I get the following error

Fatal error: exception # opam-version    1.2.2 (58ef3b8213100953848d362f7120a30356d7f77d)
# os              linux
opam: "execvp" failed on --net=host: No such file or directory

The contents of my /etc/hosts file are as follows

127.0.0.1   localhost
127.0.1.1   ubuntu

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

Could someone please explain why I could be getting this error?

EDIT

The docker command I'm using is docker run -it <repo-name> --net=host

please post your complete docker command

Sebastian
– Sebastian

2017-01-29 16:00:26 +00:00
Commented Jan 29, 2017 at 16:00 — Sebastian
– Sebastian, Commented Jan 29, 2017 at 16:00
Updated the question with the docker command.

Kapil
– Kapil

2017-01-29 16:41:12 +00:00
Commented Jan 29, 2017 at 16:41 — Kapil
– Kapil, Commented Jan 29, 2017 at 16:41

Sebastian · Accepted Answer · 2017-01-29 16:45:59Z

2

Docker parameters need to be listed before the container name. Otherwise they are interpreted as arguments of the container entrypoint. This should work:

docker run -it --network=host <repo-name>

answered Jan 29, 2017 at 16:45

Sebastian

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