Adding new workflow for beta. (flutter#695)

Author: redbrogdon

.github/workflows/beta.yml

@@ -0,0 +1,77 @@
+name: Beta Branch CI
+
+on:
+  push:
+    branches: [beta]
+  pull_request:
+    branches: [beta]
+  workflow_dispatch:
+  schedule:
+    - cron: '0 0 * * *' # Every day at midnight
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  flutter-tests:
+    name: Test Flutter ${{ matrix.flutter_version }} on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        flutter_version: [dev, beta]
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-java@v1
+        with:
+          java-version: '12.x'
+      - uses: subosito/flutter-action@v1
+        with:
+          channel: ${{ matrix.flutter_version }}
+      - run: ./tool/flutter_ci_script_${{ matrix.flutter_version }}.sh
+  # Run the stable test script on the beta channel. Since this branch will soon
+  # be merged into master as our stable-targeting code, this is the key thing we
+  # need to test.
+  stable-tests-on-beta:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-java@v1
+        with:
+          java-version: '12.x'
+      - uses: subosito/flutter-action@v1
+        with:
+          channel: beta
+      - run: ./tool/flutter_ci_script_stable.sh
+  # Verify the Android add-to-app samples build and pass tests with the beta
+  # channel.
+  android-build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-java@v1
+        with:
+          java-version: '12.x'
+      - uses: subosito/flutter-action@v1
+        with:
+          channel: beta
+      - run: ./tool/android_ci_script.sh
+  # Verify the iOS add-to-app samples build and pass tests with the beta
+  # channel.
+  ios-build:
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-java@v1
+        with:
+          java-version: '12.x'
+      - uses: subosito/flutter-action@v1
+        with:
+          channel: beta
+      - run: ./tool/ios_ci_script.sh

.github/workflows/main.yml

@@ -1,4 +1,4 @@
-name: Flutter CI
+name: Master Branch CI
 
 on:
   push:

README.md

@@ -1,6 +1,6 @@
 # Flutter samples
 
-[![Build Status](https://github.com/flutter/samples/workflows/Flutter%20CI/badge.svg)](https://github.com/flutter/samples/actions?workflow=Flutter%20CI)
+[![Build Status](https://github.com/flutter/samples/workflows/Master%20Branch%20CI/badge.svg)](https://github.com/flutter/samples/actions?workflow=Master%20Branch%20CI)
 
 A collection of open source samples that illustrate best practices for
 [Flutter](https://flutter.dev).