CI: Add Ruby to the runner and cache gems

.github/workflows/ci.yml

@@ -8,5 +8,66 @@ on:
 jobs:
   test:
     runs-on: ubuntu-latest
+
+    services:
+      postgres:
+        image: postgres:14
+        env:
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: quote_editor_test
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd="pg_isready -U postgres"
+          --health-interval=10s
+          --health-timeout=5s
+          --health-retries=5
+
+      chrome:
+        image: selenium/standalone-chrome:latest
+        ports:
+          - 4444:4444
+        options: >-
+          --add-host=host.docker.internal:host-gateway
+          --shm-size=2g
+
+    env:
+      RAILS_ENV: test
+      DATABASE_URL_TEST: postgres://postgres:postgres@127.0.0.1:5432/quote_editor_test
+      SELENIUM_REMOTE_URL: http://127.0.0.1:4444/wd/hub
+
     steps:
       - uses: actions/checkout@v4
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
+
+      - name: Set up Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: "18"
+          cache: "yarn"
+
+      - name: Install JS deps
+        run: yarn install --frozen-lockfile
+
+      - name: Check Postgres is reachable
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y postgresql-client
+          PGPASSWORD=postgres psql -h 127.0.0.1 -U postgres -d quote_editor_test -c "select 1;"
+
+      - name: Show DB env vars
+        run: |
+          echo "RAILS_ENV=$RAILS_ENV"
+          echo "DATABASE_URL=$DATABASE_URL"
+          echo "DATABASE_URL_TEST=$DATABASE_URL_TEST"
+
+      - name: Prepare DB
+        run: bin/rails db:prepare
+
+      - name: Run system tests
+        run: bin/rails test:system

Gemfile.lock

@@ -148,7 +148,10 @@ GEM
     nio4r (2.7.5)
     nokogiri (1.17.2-aarch64-linux)
       racc (~> 1.4)
+    nokogiri (1.17.2-x86_64-linux)
+      racc (~> 1.4)
     pg (1.6.3-aarch64-linux)
+    pg (1.6.3-x86_64-linux)
     pp (0.6.3)
       prettyprint
     prettyprint (0.2.0)
@@ -243,6 +246,7 @@ GEM
 
 PLATFORMS
   aarch64-linux
+  x86_64-linux
 
 DEPENDENCIES
   bootsnap

test/application_system_test_case.rb

@@ -20,7 +20,15 @@ class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
   driven_by :remote_chrome
 
   setup do
-    Capybara.server_host = "0.0.0.0"
-    Capybara.app_host = "http://web:#{Capybara.server_port}"
+    if ENV["GITHUB_ACTIONS"] == "true"
+      # CI: Rails runs on the runner, Chrome runs in a container.
+      # Bind Rails to all interfaces, and have Chrome reach the runner via host gateway.
+      Capybara.server_host = "0.0.0.0"
+      Capybara.app_host = "http://host.docker.internal:#{Capybara.server_port}"
+    else
+      # Docker Compose: both services on the same docker network
+      Capybara.server_host = "0.0.0.0"
+      Capybara.app_host = "http://web:#{Capybara.server_port}"
+    end
   end
 end