build: Use different workflows for push and pr (#1370)

.github/workflows/pr.yml

@@ -0,0 +1,37 @@
+name: shiny ci
+
+on:
+  pull_request:
+
+jobs:
+  matrix-test:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [8.x, 10.x, 12.x]
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - run: yarn install --frozen-lockfile
+      if: github.event.action == 'opened' || github.event.action == 'synchronize'
+    - run: yarn test
+      if: github.event.action == 'opened' || github.event.action == 'synchronize'
+
+  chromatic:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+      - run: yarn install --frozen-lockfile
+        if: github.event.action == 'opened' || github.event.action == 'synchronize'
+      - run: yarn chromatic --exit-zero-on-changes
+        if: github.event.action == 'opened' || github.event.action == 'synchronize'
+        env:
+          CHROMATIC_APP_CODE: ${{ secrets.CHROMATIC_APP_CODE }}

.github/workflows/config.yml → .github/workflows/push.yml

@@ -4,7 +4,6 @@ on:
   push:
     branches:
       - master
-  pull_request:
 
 jobs:
   matrix-test:
@@ -31,6 +30,6 @@ jobs:
         with:
           node-version: 12
       - run: yarn install --frozen-lockfile
-      - run: yarn chromatic
+      - run: yarn chromatic --auto-accept-changes
         env:
           CHROMATIC_APP_CODE: ${{ secrets.CHROMATIC_APP_CODE }}