starting CI -- no idea if this will work

.gitlab-ci.yml

+image: docker:stable
+
+stages:
+  - test
+
+before_script:
+  - cd schedules_api/
+  - docker build . -t schedules_api
+
+schedules_api:
+  stage: test
+  script:
+    - docker run schedules_api rails test
+

docker-compose.yml

@@ -6,3 +6,5 @@ services:
     ports:
       - "3000:3000"
     command: ./start.sh
+    volumes:
+      - .:/api

schedules_api/Dockerfile

@@ -4,5 +4,4 @@ RUN mkdir /api
 WORKDIR /api
 ADD . /api
 
-RUN bundle install --without development
-ENV RAILS_ENV=production
+RUN bundle install