add GitHub Actions workflow

Copied it from my other Jekyll projects.

1 files changed, 34 insertions, 0 deletions

diff --git a/.github/workflows/jekyll.yml b/.github/workflows/jekyll.yml
new file mode 100644
index 0000000..9c06448
--- /dev/null
+++ b/.github/workflows/jekyll.yml
@@ -0,0 +1,34 @@
+name: Jekyll
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby-version: [2.5, 2.6, 2.7]
+        version: [Gemfile, latest]
+        include:
+          - {version: Gemfile, gemfile: Gemfile}
+          - {version: latest, gemfile: .ci/Gemfile}
+    name: 'Build / ${{ matrix.ruby-version }} / ${{ matrix.version }}'
+    env:
+      BUNDLE_GEMFILE: '${{ matrix.gemfile }}'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: '${{ matrix.ruby-version }}'
+          bundler-cache: true
+      - name: jekyll build
+        run: bundle exec jekyll build --drafts
+      - name: Check integrity
+        run: |
+          nohup bundle exec jekyll serve --drafts --baseurl '' &
+          sleep 3 && wget --no-verbose --recursive --convert-links --adjust-extension --directory-prefix=/tmp -- http://localhost:4000/