Example wercker with Firebase deploy step

firebase-wercker.yml

box: devillex/docker-firebase

build:
  steps:
    - npm-install
    - script:
        name: run npm build script
        code: npm run build
    - script:
        name: echo nodejs information
        code: |
          echo "node version $(node -v) running"
          echo "npm version $(npm -v) running"
  after-steps:
    - slack-notifier:
        url: $SLACK_WEBHOOK_URL
        username: wercker

deploy-firebase:
  steps:
    - devillexio/firebase-deploy@1.2.0:
        project: $FIREBASE_PROJECT_NAME
        token: $FIREBASE_TOKEN
  after-steps:
    - slack-notifier:
        url: $SLACK_WEBHOOK_URL
        username: wercker