Fix "Setup Credentials" in postgres.yml workflow

.github/workflows/postgres.yml

@@ -60,12 +60,19 @@ jobs:
         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
+    
+    - name: 'Generate and Set RAILS_MASTER_KEY'
+      run: |
+        export RAILS_MASTER_KEY=$(bundle exec rails secret)
+        echo $RAILS_MASTER_KEY > config/master.key
 
     # Stub out the Rails credentials file so that we can start the Rails app
     - name: 'Setup Credentials'
+      env:
+        EDITOR: "cat"
       run: |
-        # generate a default credential file and key
-        EDITOR='echo "$(cat config/credentials.yml.postgresql)" >' bundle exec rails credentials:edit
+        cp config/credentials.yml.postgresql config/credentials.yml
+        bundle exec rails credentials:edit
 
     # Set the path to the wkhtmltopdf executable
     - name: 'Determine wkhtmltopdf location'