chore(ci): Separate release stage to only run on main

.github/workflows/main.yml

@@ -4,7 +4,6 @@ on: [push, pull_request]
 jobs:
   build-test-and-release:
     runs-on: ubuntu-latest
-
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -33,10 +32,35 @@ jobs:
       - name: Test
         run: npm run test
       - name: SonarCloud Scan
+        if: ${{ github.event_name == 'push' }}
         uses: sonarsource/sonarcloud-github-action@master
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+  release:
+    needs: build-and-test
+    runs-on: ubuntu-latest
+    environment: production
+    if: github.ref == 'refs/heads/main'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Setup Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: 12.x
+      - name: Setup npm cache
+        id: npm-cache
+        run: |
+          echo "::set-output name=dir::$(npm config get cache)"
+      - uses: actions/cache@v2
+        with:
+          path: ${{ steps.npm-cache.outputs.dir }}
+          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-node-
+      - name: Install dependencies
+        run: npm ci
       - name: Release
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}