Revert "cleanup github action"

This reverts commit dd3181f.

Author: olegantonyan

.github/workflows/tests.yml

@@ -11,12 +11,14 @@ jobs:
         image: postgres
         env:
           POSTGRES_PASSWORD: postgres
+        # Set health checks to wait until postgres has started
         options: >-
           --health-cmd pg_isready
           --health-interval 10s
           --health-timeout 5s
           --health-retries 5
         ports:
+          # Maps tcp port 5432 on service container to the host
           - 5432:5432
 
     strategy:
@@ -34,11 +36,13 @@ jobs:
         with:
           ruby-version: ${{ matrix.ruby-version }}
       - run: bundle install
-        env:
-          BUNDLE_GEMFILE: ${{ github.workspace }}/.github/gemfiles/${{ matrix.gemfile }}.gemfile
+        env: # $BUNDLE_GEMFILE must be set at the job level, so it is set for all steps
+          BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/${{ matrix.gemfile }}.gemfile
       - run: bundle exec rspec
-        env:
-          BUNDLE_GEMFILE: ${{ github.workspace }}/.github/gemfiles/${{ matrix.gemfile }}.gemfile
+        env: # $BUNDLE_GEMFILE must be set at the job level, so it is set for all steps
+          BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/${{ matrix.gemfile }}.gemfile
+          # The hostname used to communicate with the PostgreSQL service container
           POSTGRES_HOST: localhost
+          # The default PostgreSQL port
           POSTGRES_PORT: 5432
           POSTGRES_PASSWORD: postgres