ci: Enable caching

src/bin/plugins/lib/backend-tests.yml

@@ -14,10 +14,6 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/setup-node@v2
-      with:
-        node-version: 12
-
     - name: Install libreoffice
       run: |
         sudo add-apt-repository -y ppa:libreoffice/ppa
@@ -47,6 +43,15 @@ jobs:
       env:
         PLUGIN_NAME: ${{ steps.plugin_name.outputs.plugin_name }}
 
+    - uses: actions/setup-node@v2
+      with:
+        node-version: 12
+        cache: 'npm'
+        cache-dependency-path: |
+          src/package-lock.json
+          src/bin/doc/package-lock.json
+          node_modules/${{ steps.plugin_name.outputs.plugin_name }}/package-lock.json
+
     - name: Install plugin dependencies
       run: |
         cd ./node_modules/"${PLUGIN_NAME}"

src/bin/plugins/lib/frontend-tests.yml

@@ -15,15 +15,19 @@ jobs:
         printf %s\\n '::set-output name=name::${{github.event.repository.name}} ${{ github.workflow }} - ${{ github.job }}'
         printf %s\\n '::set-output name=tunnel_id::${{ github.run_id }}-${{ github.run_number }}-${{ github.job }}'
 
-    - uses: actions/setup-node@v2
-      with:
-        node-version: 12
-
     - name: Check out Etherpad core
       uses: actions/checkout@v2
       with:
         repository: ether/etherpad-lite
 
+    - uses: actions/setup-node@v2
+      with:
+        node-version: 12
+        cache: 'npm'
+        cache-dependency-path: |
+          src/package-lock.json
+          src/bin/doc/package-lock.json
+
     - name: Check out the plugin
       uses: actions/checkout@v2
       with:

src/bin/plugins/lib/npmpublish.yml

@@ -29,9 +29,20 @@ jobs:
       # etherpad-lite has been moved outside of $GITHUB_WORKSPACE, so it is now
       # safe to clone this plugin's repo to $GITHUB_WORKSPACE.
       - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      # This is necessary for actions/setup-node because '..' can't be used in
+      # cache-dependency-path.
+      - name: Create ep_etherpad-lite symlink
+        run: |
+          mkdir -p node_modules
+          ln -s ../../etherpad-lite/src node_modules/ep_etherpad-lite
+      - uses: actions/setup-node@v2
         with:
           node-version: 12
+          cache: 'npm'
+          cache-dependency-path: |
+            node_modules/ep_etherpad-lite/package-lock.json
+            node_modules/ep_etherpad-lite/bin/doc/package-lock.json
+            package-lock.json
       # All of ep_etherpad-lite's devDependencies are installed because the
       # plugin might do `require('ep_etherpad-lite/node_modules/${devDep}')`.
       # Eventually it would be nice to create an ESLint plugin that prohibits
@@ -58,10 +69,11 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2
         with:
           node-version: 12
           registry-url: https://registry.npmjs.org/
+          cache: 'npm'
       - name: Bump version (patch)
         run: |
           LATEST_TAG=$(git describe --tags --abbrev=0) || exit 1