Set up Continuous Integration

.gitlab-ci.yml

+image: trenpixster/elixir:latest
+
+services:
+  - postgres:latest
+
+variables:
+  DATABASE_NAME: gaja_test
+  DATABASE_HOST: postgres
+  DATABASE_USER: postgres
+  DATABASE_PASSWORD: "password"
+  MIX_ENV: "test"
+
+before_script:
+  - apt-get update && apt-get -y install postgresql-client
+  - mix deps.get
+  - mix ecto.create
+  - mix ecto.migrate
+
+mix:
+  script:
+  - mix test

README.md

@@ -2,6 +2,13 @@
 
 Simple API to store all your personal data in a place of your own.
 
+## Status
+
+[![pipeline
+status](https://gitlab.com/personal-server-community/personal-database/badges/master/pipeline.svg)](https://gitlab.com/personal-server-community/personal-database/commits/master)
+
+[![coverage
+report](https://gitlab.com/personal-server-community/personal-database/badges/master/coverage.svg)](https://gitlab.com/personal-server-community/personal-database/commits/master)
 
 ## Development environment