Use safer node_modules cache (#803)

Signed-off-by: Tilman Vatteroth <tilman.vatteroth@tu-dortmund.de>

.github/workflows/build.yml

@@ -20,17 +20,23 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "::set-output name=dir::$(yarn cache dir)"
       - name: Cache node_modules
-        uses: actions/cache@v2.1.3
+        uses: actions/cache@v2
+        id: yarn-cache
         with:
-          path: node_modules
-          key: node_modules
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
       - name: Set up NodeJS
         uses: actions/setup-node@v1
         with:
           node-version: ${{ matrix.node }}
       - name: Install dependencies
-        run: yarn install
+        run: yarn install --frozen-lockfile --prefer-offline
       - name: Test Project
         run: yarn test
       - name: Build project

.github/workflows/e2e.yml

@@ -16,20 +16,32 @@ jobs:
     name: build frontend
     steps:
       - uses: actions/checkout@v2
+
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+
       - name: Cache build
         uses: actions/cache@v2.1.3
         with:
           path: build
           key: build
+
       - name: Cache node_modules
-        uses: actions/cache@v2.1.3
+        uses: actions/cache@v2
+        id: yarn-cache
         with:
-          path: node_modules
-          key: node_modules
-      - uses: actions/setup-node@v1
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
+
+      - name: Set up NodeJS
+        uses: actions/setup-node@v1
         with:
-          node-version: '14'
-      - run: yarn install
+          node-version: 14
+
+      - run: yarn install --frozen-lockfile --prefer-offline
       - run: yarn build
       - uses: actions/upload-artifact@master
         with:

.github/workflows/lint.yml

@@ -17,16 +17,25 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
+
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+
       - name: Cache node_modules
-        uses: actions/cache@v2.1.3
+        uses: actions/cache@v2
+        id: yarn-cache
         with:
-          path: node_modules
-          key: node_modules
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
+
       - name: Set up NodeJS
         uses: actions/setup-node@v1
         with:
           node-version: 14
       - name: Install dependencies
-        run: yarn install
+        run: yarn install --frozen-lockfile --prefer-offline
       - name: Lint code
         run: yarn lint