Docker remote api pull from Docker hub private registry

Question

I\'m trying to pull docker images from a private repository hosted in Docker hub https://registry.hub.docker.com/u/myname/myapp like this using the docker remote API. The do

Answer 1

From this merged docker pull request, it seems that X-Registry-Auth header should be a base-64 encoded json string of the form

{
  'username': string,
  'password': string,
  'email': string,
  'serverddress' : string
}

another reference link

Answer 2

I had the same issue.

Here's the "raw" AuthConfig object that you should use to pass the credentials:

{
  "username":"your_registry_username_or_email",
  "password":"*****",
  "auth":"",    // leave empty
  "email":"your@email.tld"
}

You then have to "encode" it using Base64.

You didn't tell what language you're using, but if needed, this awesome site will let you encode your object in one click. Or, from a shell:

echo '{"username":"username","password":"*****", "auth":"","email":"your@email.tld"}' | base64

Then, just pass the encoded value to the header:

X-Registry-Auth: eyJ1c2VybmFtZSI6InlvdXJfcmVnaXN0cnlfdXNlcm5hbWVfb3JfZW1haWwiLCJwYXNzd29yZCI6IioqKioqIiwiYXV0aCI6IiIsImVtYWlsIjoieW91ckBlbWFpbC50bGQifQ==

Here's a working example using curl and

• a registry available at r.getitlive.io
• a docker daemon listening at '192.168.60.10:8888' :

curl -X POST  -d ""  \
  -H "X-Registry-Auth: eyJ1c2VybmFtZSI6InlvdXJfcmVnaXN0cnlfdXNlcm5hbWVfb3JfZW1haWwiLCJwYXNzd29yZCI6IioqKioqIiwiYXV0aCI6IiIsImVtYWlsIjoieW91ckBlbWFpbC50bGQifQ==" \
  'http://192.168.60.11:8888/images/create?fromImage=r.getitlive.io/cool/repo&tag=latest'

Note : I couldn't make it work (yet) by putting the remote registry endpoint/URL in the serveraddress field of the AuthConfig object. That's why I'm adding the registry host to the fromImage=parameter.