Problem Definition

Currently, Docker Runner only connects to public Docker Image Registries to pull images from, such as hub.docker.com

Please add the capability to connect to private registries to pull images.

Suggested Solution

Allow auth to private registries through input credentials, or the Shared Credentials

Workaround

Remote Agents 

Add the docker login command to the .profile of the Remote Agent user, for each Agent which will be using the Docker Runner build capability.

docker login -u <username> -p <password> <registryhost:port>

To keep from having passwords stored in plain text in a script you can use the credential helper as outlined in the documentation for docker login

Elastic Agents

1. From the top navigation bar select    > Elastic Bamboo > Image configurations.
2. Select your preferred elastic image configuration and select edit 
3. Scroll down to Instance startup script section.
4. Add the script below and save. Ensure to replace with the contents of your $HOME/.docker/config.json and your artifactory URL 

   #!/bin/bash
   export HOME=/home/bamboo
   cd $HOME
   mkdir .docker && chmod 700 .docker 
   cat > .docker/config.json << EOF
   {
       "auths": {
           "private_registry_URL": {
               "auth": "AUTH_TOKEN"
           }
       }
   }
   EOF
   chown -R bamboo:bamboo .docker