try updating travis yaml again

.travis.yml

@@ -6,26 +6,28 @@ node_js:
 services:
   - docker
 
+stages:
+  - test
+  - build
+
+jobs:
+  include:
+    - stage: test
       before_install:
         - docker-compose -f docker-compose-development.yml up -d
         - docker ps -a
-
       install: true
-
       script:
       # Run unit tests in the app container
       - docker-compose exec -T app npm run test --verbose
-
-after_success:
-# build images
+    - stage: build
       if: branch = master OR branch = production-docker
+      env:
+      - APP_IMAGE_NAME=p5jswebeditor_app
+      script:
       - docker-compose stop
       - docker-compose build --no-cache
       - docker image ls
       - docker login -u="$DOCKER_USERNAME" -p="$DOCKER_PASSWORD"
       - docker tag $APP_IMAGE_NAME $DOCKER_USERNAME/$DOCKER_REPOSITORY:latest
       - docker push $DOCKER_USERNAME/$DOCKER_REPOSITORY:latest
-
-env:
-  global:
-    - APP_IMAGE_NAME=p5jswebeditor_app