feat: add GitHub action for e2e testing

.github/workflows/cypress.yml

@@ -0,0 +1,31 @@
+name: Cypress tests
+on: [push]
+jobs:
+  cypress-run:
+    name: Cypress run
+    runs-on: ubuntu-latest
+    services:
+      mongodb:
+        image: mongo:3.5.5
+# ports may not be necessary, try without
+        ports:
+          - 27017:27017
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+
+      - name: Set up environment
+        run: cp sample.env .env
+
+      - name: Cypress run
+        uses: cypress-io/github-action@v1
+        with:
+          build: npm run build
+# this should mirror the production build, but for now we're just using the dev
+# server and gatsby serve instead (the npm script serve:client needs updating!)
+          start: npm start
+          wait-on: http://localhost:8000
+# the site builds in about 8 minutes, so there is currently 12 minutes of time
+# left for testing.
+          wait-on-timeout: 1200
+          config: baseUrl=http://localhost:8000

client/package.json

@@ -94,7 +94,7 @@
     "format": "npm run format:gatsby && npm run format:src && npm run format:utils",
     "prestand-alone": "npm run prebuild",
     "stand-alone": "gatsby develop",
-    "serve": "gatsby serve",
+    "serve": "gatsby serve -p 8000",
     "test": "jest"
   },
   "devDependencies": {

package.json

@@ -47,6 +47,7 @@
     "seed:auth-user": "cross-env DEBUG=fcc:* node ./tools/scripts/seed/seedAuthUser",
     "seed:challenges": "cross-env DEBUG=fcc:* node ./tools/scripts/seed/seedChallenges",
     "serve:client": "cd ./client && npm run serve",
+    "start": "npm-run-all ensure-env -p develop:server serve:client",
     "test": "npm-run-all -p test:*",
     "test:client": "cd ./client && npm test && cd ../",
     "test:client:e2e": "cd ./client && npm run e2e:ci && cd ../",