chore(cypress): rename containers to machines

.github/workflows/on_pull_request.yml

@@ -363,10 +363,14 @@ jobs:
     needs: build
     runs-on: ubuntu-latest
     strategy:
+      # when one test fails, DO NOT cancel the other
+      # containers, because this will kill Cypress processes
+      # leaving the Dashboard hanging ...
+      # https://github.com/cypress-io/github-action/issues/48
       fail-fast: false
       matrix:
-        # run copies of the current job in parallel
-        containers: [1, 2, 3, 4, 5]
+        # run 3 copies of the current job in parallel, all load-balanced
+        machines: [1, 2, 3]
     steps:
       - name: Checkout Repo
         uses: actions/checkout@v2

package.json

@@ -70,7 +70,7 @@
     "test:tools": "jest ./tools/ -c ./tools/jest.config.js",
     "test:tools-16": "USE_REACT_16=true jest ./tools/ -c ./tools/jest.config.js",
     "test:coverage": "yarn pre-test && jest --coverage",
-    "test:website": "start-server-and-test 'yarn serve:website' http://localhost:9000 'yarn cypress run --record --parallel --spec \"./cypress/integration/**/**/*.spec.ts\"'",
+    "test:website": "start-server-and-test 'yarn serve:website' http://localhost:9000 'yarn cypress run --record --parallel --group cypress-tests --spec \"./cypress/integration/**/**/*.spec.ts\"'",
     "test:website-gui": "start-server-and-test 'yarn serve:website' http://localhost:9000  'yarn cypress open'",
     "serve:website": "yarn workspace @twilio-paste/website serve",
     "package-size-action-build": "yarn build",