Pushing: Authentication

Docker Template can attempt to push your image (after authenticating.) It will do so with the Docker API and it supports both aliases and full blown images (since to Docker this is exactly the same.) By default when you docker build --push (or docker-template push) it will try and use your ~/.docker to authenticate you, however if you are on a CI you might need to use the following variables:

• $DOCKER_SERVER
• $DOCKER_USERNAME
• $DOCKER_PASSWORD
• $DOCKER_EMAIL

PROTIP: If you are on Travis-CI or another public CI, make sure to encrypt those variables so that nobody gets your authentication information. On Travis you can do this with bundle exec travis encrypt data