cli/components/engine/docs/sources/index/variable.rst

Docker Index Environment Variable

Variable

DOCKER_INDEX_URL

Setting this environment variable on the docker server will change the URL docker index. This address is used in commands such as docker login, docker push and docker pull. The docker daemon doesn't need to be restarted for this parameter to take effect.

Example

docker -d &
export DOCKER_INDEX_URL="https://index.docker.io"