Fix Postgres Workflow (1/2)

Copy/pasted `https://github.com/DMPRoadmap/roadmap/blob/fc047ac0ae1b10f9fd451909e11a2d31e50b3ada/.github/workflows/postgres.yml` (DMPRoadmap Release v4.2.0).

.github/workflows/postgres.yml

@@ -1,6 +1,6 @@
 name: Tests - PostgreSQL
 
-on: [push, pull_request]
+on: [pull_request]
 
 jobs:
   postgresql:
@@ -23,6 +23,7 @@ jobs:
           --health-timeout 5s
           --health-retries 5
 
+    # Define environment variables for Postgres and Rails
     env:
       RAILS_ENV: test
       DATABASE_URL: postgres://postgres:@localhost:5432/roadmap_test
@@ -34,7 +35,7 @@ jobs:
     # Install Ruby and run bundler
     - uses: ruby/setup-ruby@v1
       with:
-        ruby-version: '3.1.4'
+        ruby-version: '3.0'
         bundler-cache: true
 
     ## - run: echo 'NODE_OPTIONS="--openssl-legacy-provider"' >> $GITHUB_ENV
@@ -43,87 +44,55 @@ jobs:
     # Install Node
     - uses: actions/setup-node@v3
       with:
-        node-version: '16.6.0'
+        node-version: 18
         cache: 'yarn'
 
+    # Install the Postgres developer packages
     - name: 'Install Postgresql Packages'
       run: |
         sudo apt-get update
         sudo apt-get install libpq-dev
 
-    - name: 'Determine Ruby and Bundler Versions from Gemfile.lock'
-      run: |
-        echo "RUBY_VERSION=`cat ./Gemfile.lock | grep -A 1 'RUBY VERSION' | grep 'ruby' | grep -oE '[0-9]\.[0-9]'`" >> $GITHUB_ENV
-        echo "BUNDLER_VERSION=`cat ./Gemfile.lock | grep -A 1 'BUNDLED WITH' | grep -oE '[0-9]\.[0-9]'`" >> $GITHUB_ENV
-
-    # Install Ruby - using the version found in the Gemfile.lock
-    - name: 'Install Ruby'
-      uses: ruby/setup-ruby@v1
-      with:
-        ruby-version: ${{ env.RUBY_VERSION }}
-
     # Copy all of the example configs over
     - name: 'Setup Default Configuration'
       run: |
-        # Make copies of all the example config files
         cp config/database.yml.sample config/database.yml
         cp config/initializers/contact_us.rb.example config/initializers/contact_us.rb
         cp config/initializers/wicked_pdf.rb.example config/initializers/wicked_pdf.rb
         cp .env.postgresql .env
 
-    # Try to retrieve the gems from the cache
-    - name: 'Cache Gems'
-      uses: actions/[email protected]
-      with:
-        path: vendor/bundle
-        key: ${{ runner.os }}-gem-${{ hashFiles('**/Gemfile.lock') }}
-        restore-keys: |
-          ${{ runner.os }}-gem-
-
-    - name: 'Bundle Install'
-      run: |
-        gem install bundler -v ${{ env.BUNDLER_VERSION }}
-        bundle config path vendor/bundle
-        bundle install --jobs 4 --retry 3 --without mysql rollbar aws
-
+    # Stub out the Rails credentials file so that we can start the Rails app
     - name: 'Setup Credentials'
       run: |
         # generate a default credential file and key
         EDITOR='echo "$(cat config/credentials.yml.postgresql)" >' bundle exec rails credentials:edit
 
-    # Try to retrieve the yarn JS dependencies from the cache
-    - name: 'Cache Yarn Packages'
-      uses: actions/[email protected]
-      with:
-        path: node_modules/
-        key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
-        restore-keys: |
-          ${{ runner.os }}-build-${{ env.cache-name }}-
-          ${{ runner.os }}-build-
-          ${{ runner.os }}-yarn-
-          ${{ runner.os }}-
-
+    # Set the path to the wkhtmltopdf executable
     - name: 'Determine wkhtmltopdf location'
       run: echo "WICKED_PDF_PATH=`bundle exec which wkhtmltopdf`" >> $GITHUB_ENV
 
+    # Run yarn install for JS dependencies
     - name: 'Yarn Install'
       run: |
         yarn install
 
+    # Initialize the DB
     - name: 'Setup Test DB'
       run: |
         bundle exec rails db:setup RAILS_ENV=test
         bundle exec rails db:migrate RAILS_ENV=test
 
+    # Prebuild the CSS, JS and image assets
     - name: 'Compile Assets'
       run: bundle exec rails assets:precompile
 
+    # Run  the unit and functional tests
     - name: 'Run Rspec Unit and Functional Tests'
       run: |
         bundle exec rspec spec/models/ spec/policies/ spec/services/ spec/helpers/
         bundle exec rspec spec/controllers/ spec/presenters/ spec/requests/ spec/views
         bundle exec rspec spec/mixins/
 
-    # Integration Tests are only run if PR or Push is to master or development branches
+    # Run the time consuming integration tests (using Chrome headless browser)
     - name: 'Run Integration Tests'
-      run: bundle exec rspec spec/features/
+      run: bundle exec rspec spec/features/