Parallelize GitHub actions execution with dependencies caching

.github/workflows/main.yml

@@ -2,38 +2,79 @@ name: CI
 
 on: [push]
 
+env:
+  NODE_VERSION: 12.x
+
 jobs:
-  build:
+  install:
     runs-on: ubuntu-latest
 
-    strategy:
-      matrix:
-        node-version: [10.x]
-
     steps:
-      - uses: actions/checkout@v2
-      - name: Use Node.js ${{ matrix.node-version }}
+      - name: CI
+        uses: actions/checkout@v2
+      - name: Use Node ${{ env.NODE_VERSION }}
         uses: actions/setup-node@v2
         with:
-          node-version: ${{ matrix.node-version }}
-      - name: install dependencies
-        run: |
-          yarn
-      - name: run lint
-        run: |
-          yarn lint
-      - name: run tests
-        run: |
-          yarn test --watchAll=false --coverage --reporters=default
+          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 install --frozen-lockfile
+        env:
+          CI: true
+
+  lint:
+    runs-on: ubuntu-latest
+    needs: [install]
+
+    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:
+          CI: true
+
+  test:
+    runs-on: ubuntu-latest
+    needs: [install]
+
+    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
+        run: yarn test --coverage --reporters=default
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v1.4.1
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
-      - name: build
-        run: |
-          yarn build
+        env:
+          CI: true
 
-      - name: semantic release
+  build:
+    runs-on: ubuntu-latest
+    needs: [install]
+
+    steps:
+      - name: Build
+        uses: actions/checkout@v2
+      - uses: actions/cache@v2
+        with:
+          path: '**/node_modules'
+          key: ${{ runner.os }}-${{ env.NODE_VERSION }}-modules-${{ hashFiles('**/yarn.lock') }}
+      - name: Build
+        run: yarn build
+      - name: Release
         uses: cycjimmy/semantic-release-action@v2
         id: semantic
         with: