anchor.diff:    PUBLISH_HOST=$PUBLISH_HOST \
     SERVICE_NAME=$SERVICE_NAME \
     ROLLBAR_POST_SERVER_TOKEN=$ROLLBAR_POST_SERVER_TOKEN \
  +  TRAVIS_COMMIT=$TRAVIS_COMMIT \
     NODE_ENV=production
   
   
  
positive.code: 
  ### Stage 5 - Base image for builds to share args and environment variables
  FROM base as build-base
  # ARGs
  ARG API_HOST
  ARG DISCOVERY_HOST=hakken:8000
  
negative.code: ARG PUBLISH_HOST=hakken
  ARG SERVICE_NAME=blip
  ARG ROLLBAR_POST_SERVER_TOKEN
  ARG TRAVIS_COMMIT
  # Set ENV from ARGs
  ENV \
    API_HOST=$API_HOST \
  