Changed CI/CD

.github/workflows/run-tests.yaml

@@ -1,19 +1,27 @@
-name: Run Jest unit tests
+name: Run tests
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
 
-on: 
-    push:
-        branches: ["main"]
-    pull_request:
-        branches: ["main"]
-
 jobs:
-    build:
-        runs-on: ubuntu-latest
-        container: node:20
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [12.x, 14.x, 16.x]
+        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
-        steps:
-        - run: npm i
-    tests:
-        runs-on: ubuntu-latest
-        steps:
-        - run: npm test
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v2
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+    - run: npm ci
+    - run: npm test