commands

#!/usr/bin/env bash
set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x

case "$1" in
  registry:login)
    shift
    echo "$@"
    docker login "$@"
    ;;

  registry:push)
    mkdir -p /home/dokku/checkout
    cd /home/dokku/checkout
    UUID=$(uuidgen)
    git clone "$2" "$UUID"
    cd "$UUID"
    dokku apps:create "$UUID"
    if [[ -f "$UUID/Dockerfile" ]]; then
      IMAGE_TYPE="dockerfile"
    else
      IMAGE_TYPE="herokuish"
    fi
    tar c . | dokku build "$UUID" "$IMAGE_TYPE"
    docker tag "dokku/$UUID" "$3"
    docker push "$3"
    dokku delete "$UUID"
    rm -rf /home/dokku/checkout/"$UUID"
    ;;

  registry:pull)
    APP=$2; DOCKER_REGISTRY_IMAGE=$3
    mkdir -p "$DOKKU_ROOT/$APP"
    docker pull "$DOCKER_REGISTRY_IMAGE"
    docker tag "$DOCKER_REGISTRY_IMAGE" "dokku/$APP"
    dokku release "$APP"
    dokku deploy "$APP"
    ;;

  help | registry:help)
    HELP=$(cat<<EOF
    registry:login <docker login args>, Login to a docker registry
    registry:push <git_url> <docker_registry_image>, Clone a git url, exec buildstep and push the resulting Docker image to the logged on registry
    registry:pull <app> <docker_registry_image>, Pull a Docker image (produced with buildstep) from the logged on registry and deploy
EOF
)
    if [[ -n $DOKKU_API_VERSION ]]; then
      echo "$HELP"
    else
      cat && echo "$HELP"
    fi
    ;;

  *)
    exit $DOKKU_NOT_IMPLEMENTED_EXIT
    ;;
esac