sudo: required
dist: trusty
python: '2.7'
services:
  - docker
env:
  - IMAGE_NAME=myorg/myproject
  - REGISTRY_USER=myrobot
  # REGISTRY_PASS=...
  - secret: "<something long>"

install: []
before_script:
  - docker pull "${IMAGE_NAME}:develop" || true
script:
  - docker build --pull --cache-from "${IMAGE_NAME}:develop" --tag "$IMAGE_NAME" .

before_deploy:
  - docker login -u "$REGISTRY_USER" -p "$REGISTRY_PASS"
  - git_sha="$(git rev-parse --short HEAD)"
  - docker tag "$IMAGE_NAME" "${IMAGE_NAME}:develop"
  - docker tag "$IMAGE_NAME" "${IMAGE_NAME}:${git_sha}-develop"
deploy:
  provider: script
  script: docker push "${IMAGE_NAME}:develop" && docker push "${IMAGE_NAME}:${git_sha}-develop"
  on:
    branch: develop