Update travis to test in docker and push passing images

.travis.yml

@@ -1,10 +1,26 @@
+sudo: required
 language: python
-python:
-  - "3.6"
+python: "3.6"
+services: docker
+env:
+  - TESTER_IMAGE_NAME=atst-tester
+  - PROD_IMAGE_NAME=atst-prod
+
 before_install:
-  - pip install pipenv
-  - pipenv install --dev --skip-lock
-  - gem install sass
-  - npm install
+  - docker login -u "$ATAT_DOCKER_REGISTRY_USERNAME" -p "$ATAT_DOCKER_REGISTRY_PASSWORD" "$ATAT_DOCKER_REGISTRY_URL"
+  - docker build --tag "$TESTER_IMAGE_NAME" . -f docker/tester/Dockerfile
+
 script:
-  - python -m pytest
+  - docker run "$TESTER_IMAGE_NAME"
+
+before_deploy:
+  - docker build --tag "$PROD_IMAGE_NAME" . -f docker/prod/Dockerfile
+  - remote_image_name="${ATAT_DOCKER_REGISTRY_URL}/${PROD_IMAGE_NAME}:${git_sha}"
+  - git_sha="$(git rev-parse --short HEAD)"
+  - docker tag "$PROD_IMAGE_NAME" "${remote_image_name}"
+  - docker images
+  - docker push "${remote_image_name}"
+
+deploy:
+  provider: script
+  script: echo "Hi there"