Infrastructure: Run builds with GitHub action workflow instead of scr…

…ipts (pull #1500)

Removes 2 deploy scripts:
* scripts/travis-before_deploy.sh
* scripts/travis-deploy.sh

And replaces them with a GitHub actions work flow defined in `.github/workflows/deploy.yml`.

This deploy workflow can use a built-in GitHub authentication token so forks can utilize the build without setup.

Co-authored-by: Matt King <[email protected]>

.github/workflows/deploy.yml

@@ -0,0 +1,54 @@
+name: Deploy gh-pages
+
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - .github/workflows/deploy.yml
+      - common/**
+      - examples/**
+      - img/**
+      - aria-practices.html
+      - README.md
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        path: main
+
+    - uses: actions/checkout@v2
+      with:
+        path: deploy
+        ref: gh-pages
+
+    - name: Cleanup old files
+      run: |
+        rm -rf deploy/common/
+        rm -rf deploy/examples/
+        rm -rf deploy/img/
+        rm -rf deploy/index.html
+        rm -rf deploy/README.md
+
+    - name: Copy files
+      run: |
+        cp -R main/common deploy
+        cp -R main/examples deploy
+        cp -R main/img deploy
+        cp main/README.md deploy
+
+    - name: Generate new index
+      run: |
+        curl "https://labs.w3.org/spec-generator/?type=respec&url=https://raw.githack.com/${{ github.repository }}/${{ github.sha }}/aria-practices.html" -o deploy/index.html -f --retry 3
+
+    - name: Commit back
+      run: |
+        cd deploy
+        git config user.name github-actions[bot]
+        git config user.email github-actions[bot]@users.noreply.github.com
+        git add --all
+        git commit -am "Generated by ${{ github.sha }}" || true
+        git push

.travis.yml

@@ -9,7 +9,6 @@ git:
 stages:
 - Lint
 - Test
-- Deploy
 
 jobs:
   fast_finish: true
@@ -62,14 +61,3 @@ jobs:
         - TEST_WAIT_TIME=1000
         - CI_NODE_TOTAL=3
         - CI_NODE_INDEX=2
-
-    - stage: Deploy
-      if: branch = master AND type != pull_request
-      script: skip
-      before_deploy: scripts/travis-before_deploy.sh
-      deploy:
-        provider: script
-        skip_cleanup: true
-        script: /tmp/deploy/travis-deploy.sh
-        on:
-          branch: master