expect script to interact with "docker login"

docker-registry-expect-scripted-login

#!/bin/bash

#DOCKER_REGISTRY_URI=_DOCKER_REGISTRY_URI_
#DOCKER_REGISTRY_USER=_DOCKER_REGISTRY_USER_
#DOCKER_REGISTRY_PASS=_DOCKER_REGISTRY_PASS_

expect <<EOF
spawn docker login -u $DOCKER_REGISTRY_USER $DOCKER_REGISTRY_URI
while (1) {
  expect {
    -re ".*Password:.*" { send "$DOCKER_REGISTRY_PASS\r" }
    eof { break }
  }
}
EOF