Create prettier.yml

.github/workflows/prettier.yml

@@ -0,0 +1,22 @@
+name: Prettier Check
+
+on: [push]
+
+jobs:
+  prettier:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Check out code
+      uses: actions/checkout@v2
+
+    - name: Set up Node.js
+      uses: actions/setup-node@v2
+      with:
+        node-version: '14'
+
+    - name: Install dependencies
+      run: npm install
+
+    - name: Prettier check
+      run: npx prettier --check ./apps/web