Merge branch '10-setup-ci-in-gitlab-for-automated-testing' into 'main'

Resolve "Setup CI in GitLab for automated testing"

Closes #10

See merge request !3

.gitlab-ci.yml

+stages:
+  - build
+  - test
+
+compile:
+  stage: build
+  image: elixir:1.14
+  # use cache to speed up subsequent builds
+  cache:
+    key: ${CI_COMMIT_REF_SLUG}
+    paths:
+      - _build
+      - deps
+  script:
+    - mix local.hex --force
+    - mix local.rebar --force
+    - mix deps.get
+    - mix compile
+
+test:
+  stage: test
+  image: elixir:1.14
+
+  # Pick zero or more services to be used on all builds.
+  # Only needed when using a docker container to run your tests in.
+  # Check out: http://docs.gitlab.com/ee/ci/docker/using_docker_images.html#what-is-a-service
+  services:
+    - postgres:13-alpine
+
+  variables:
+    POSTGRES_DB: proptrackr_dev
+    POSTGRES_HOST: postgres
+    POSTGRES_USER: postgres
+    POSTGRES_PASSWORD: "postgres"
+    MIX_ENV: "test"
+
+  before_script:
+    - apt-get update && apt-get -y install postgresql-client
+    - mix local.rebar --force
+    - mix local.hex --force
+    - mix deps.get
+    - mix ecto.create
+    - mix ecto.migrate
+
+  script:
+    - mix test
\ No newline at end of file