chore: cache playwright binary in github actions (#176)

.github/workflows/run-tests.yml

@@ -16,20 +16,29 @@ jobs:
         env:
           cache-name: cache-node-modules
         with:
-          # npm cache files are stored in `~/.npm` on Linux/macOS
           path: ~/.npm
           key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
           restore-keys: |
             ${{ runner.os }}-build-${{ env.cache-name }}-
             ${{ runner.os }}-build-
             ${{ runner.os }}-
 
-      - if: ${{ steps.cache-npm.outputs.cache-hit != 'true' }}
-        name: List the state of node modules
-        continue-on-error: true
-        run: npm list
+      - name: Cache Playwright binaries
+        uses: actions/cache@v3
+        id: playwright-cache
+        with:
+          path: ~/.cache/ms-playwright
+          key: ${{ runner.os }}-playwright-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-playwright-
+
       - name: Install dependencies
-        run: npm ci && npx playwright install --with-deps
+        run: npm ci
+
+      - name: Install Playwright
+        if: steps.playwright-cache.outputs.cache-hit != 'true'
+        run: npx playwright install --with-deps
+
       - name: Start backend
         env:
           DATABASE_URL: ${{ secrets.DATABASE_URL }}