try with actions/cache@v2

Author: alexandr-g

.github/workflows/main.yml

@@ -2,23 +2,25 @@ name: CI
 
 on: [push]
 
+env:
+  NODE_VERSION: 12.x
+
 jobs:
   install:
     runs-on: ubuntu-latest
 
-    strategy:
-      matrix:
-        node-version: [10.x]
-
     steps:
       - uses: actions/checkout@v2
-      - name: Use Node.js ${{ matrix.node-version }}
+      - name: Use Node ${{ env.NODE_VERSION }}
         uses: actions/setup-node@v2
         with:
-          node-version: ${{ matrix.node-version }}
+          node-version: ${{ env.NODE_VERSION }}
+      - uses: actions/cache@v2
+        with:
+          path: '**/node_modules'
+          key: ${{ runner.os }}-${{ env.NODE_VERSION }}-modules-${{ hashFiles('**/yarn.lock') }}
       - name: Install dependencies
-        run: |
-          yarn
+        run: yarn install --frozen-lockfile
         # - name: run lint
         #   run: |
         #     yarn lint
@@ -52,6 +54,10 @@ jobs:
     steps:
       - name: Running lint
         uses: actions/checkout@v2
+      - uses: actions/cache@v2
+        with:
+          path: '**/node_modules'
+          key: ${{ runner.os }}-${{ env.NODE_VERSION }}-modules-${{ hashFiles('**/yarn.lock') }}
       - name: Lint
         run: yarn lint
         env:
@@ -64,6 +70,11 @@ jobs:
     steps:
       - name: Running tests
         uses: actions/checkout@v2
+      - uses: actions/cache@v2
+        with:
+          path: '**/node_modules'
+          key: ${{ runner.os }}-${{ env.NODE_VERSION }}-modules-${{ hashFiles('**/yarn.lock') }}
+      - name: Test
       - name: Test
         run: yarn test
         env: