[WIP] Set up Lighthouse CI

.github/workflows/lighthouse-ci.yml

@@ -0,0 +1,37 @@
+name: Lighthouse CI
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  lhci:
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 4
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Use Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: '14'
+
+      - name: Prepare secrets
+        # we could use poetry run python manage.py createsecrets -o .env
+        # but this would require us to:
+        #   1. set up Python
+        #   2. install Poetry
+        #   3. install dependencies
+        # instead, we copy the example debug config file to save CI resources
+        run: cp .env.local .env
+
+      - name: Build Docker images
+        run: docker-compose -f docker-compose.yml -f docker-compose.dev.yml build --parallel
+
+      - name: Run Lighthouse CI
+        run: |
+          npm install -g @lhci/cli@0.6.1
+          lhci autorun

lighthouserc.js

@@ -0,0 +1,12 @@
+module.exports = {
+  ci: {
+    collect: {
+      url: ['http://localhost:8000/'],
+      startServerCommand: 'docker-compose -f docker-compose.yml -f docker-compose.prod.yml up',
+      startServerReadyTimeout: 60000,
+    },
+    upload: {
+      target: 'temporary-public-storage',
+    },
+  },
+};