Docker – How to get remote access to a private docker-registry


I'm trying to setup a private docker registry using the image taken from:

Just by running:
docker run -p 5000:5000 registry

I can pull/push from/to this repository only from localhost, but if i try to access it from another machine (using a private address on the same LAN) it fails with an error message:

*2014/11/03 09:49:04 Error: Invalid registry endpoint https ://': 
Get https:// Forbidden. If this private 
registry supports only HTTP or HTTPS with an unknown CA certificate,
please add `--insecure-registry` to the daemon's 
arguments. In the case of HTTPS, if you have access to the registry's
CA certificate, no need for the flag; simply place the CA certificate 
at /etc/docker/certs.d/*

What drives me crazy is that I can access it successfully using:
and/or curl

I also don't understand where and how I should pass the --insecure-registry flag.

Best Solution

OK - I found the solution to this - after a day of digging.

For docker below 1.12.1:

It turns out that the new client version refuses to work with a private registry without SSL.

To fix this - the daemon on the client machine should be launched with the insecure flag:

Just type:

sudo service docker stop # to stop the service

and then

sudo docker -d --insecure-registry

(replace the with your own ip address).

I would expect the docker guys to add this option to the pull/push command line...

Edit - altenantively - you can add the flag to DOCKER_OPTS env variable inside /etc/default/docker... and then sudo service docker restart

Edit again - It seems that the docker guys are on it - and a fix will come soon:

For docker 1.12.1:

Please follow below the answer of vikas027 (valid for centos)