fix(ci): cache cypress binary correctly

It seems cypress installs its own binary under a different path than
the path where it later looks for it for running the tests. This
change adds proper versioned caching for the binary to avoid re-
downloads and configures the binary path accordingly.

Signed-off-by: Erik Michelson <github@erik.michelson.eu>

.github/actions/setup-node/action.yml

@@ -25,6 +25,21 @@ runs:
         path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
         key: ${{ runner.os }}-yarn
 
+    - name: Get cypress version
+      id: cypress-version
+      run: echo "cyver=$(jq -r '.devDependencies.cypress' package.json)" >> $GITHUB_OUTPUT
+      working-directory: frontend/
+      shell: bash
+
+    - name: Cache cypress binaries
+      uses: actions/cache@6849a6489940f00c2f30c0fb92c6274307ccb58a # v4.1.2
+      id: cypress-cache
+      with:
+        path: /home/runner/.cache/cypress
+        key: cypress-${{ runner.os }}-${{ steps.cypress-version.outputs.cyver }}
+        restore-keys: |
+          cypress-${{ runner.os }}-${{ steps.cypress-version.outputs.cyver }}
+
     - name: Set up NodeJS
       uses: actions/setup-node@39370e3970a6d050c480ffad4ff0ed4d3fdee5af # v4.1.0
       with:
@@ -34,3 +49,5 @@ runs:
       run: yarn install --immutable
       working-directory: .
       shell: bash
+      env:
+        CYPRESS_CACHE_FOLDER: /home/runner/.cache/cypress

.github/workflows/e2e-tests.yml

@@ -156,17 +156,11 @@ jobs:
     if: "(github.event_name == 'pull_request_target') == github.event.pull_request.head.repo.fork"
     needs: frontend-build
     runs-on: ubuntu-latest
-    container:
-      image: cypress/browsers:node-20.18.0-chrome-130.0.6723.69-1-ff-131.0.3-edge-130.0.2849.52-1@sha256:3dd9d85309ed42d4befeda0b80e15b93c5ede2d419b6fc93a341ffc7337e3505
-      options: --shm-size=2g
     strategy:
       fail-fast: false
       matrix:
         containers: [ 1, 2, 3 ]
     steps:
-      - name: Install additional packages
-        run: apt-get update && apt-get install -y jq zstd screen curl
-
       - name: Check out repo
         uses: actions/checkout@v4.2.2 # v4.2.2
         with:
@@ -177,6 +171,12 @@ jobs:
         with:
           NODEJS_VERSION: ${{ env.NODEJS_VERSION }}
 
+      - name: Show cypress info
+        run: yarn cypress info
+        working-directory: frontend/
+        env:
+          CYPRESS_CACHE_FOLDER: /home/runner/.cache/cypress
+
       - name: Download build
         uses: actions/download-artifact@v4
         with:
@@ -203,6 +203,7 @@ jobs:
         run: yarn test:e2e:ci --filter=@hedgedoc/frontend
         shell: bash
         env:
+          CYPRESS_CACHE_FOLDER: /home/runner/.cache/cypress
           CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           TURBO_TOKEN: ${{ secrets.TURBO_TOKEN }}