GitHub Pages + Documentation

.github/workflows/docs.yml

@@ -0,0 +1,58 @@
+name: docs
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  build:
+    name: build
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+
+      - name: fetch crystal version
+        id: crystal-version
+        run: echo "crystal=$(cat .crystal-version)" >> $GITHUB_OUTPUT
+
+      - name: install crystal
+        uses: crystal-lang/[email protected]
+        with:
+          crystal: ${{ steps.crystal-version.outputs.crystal }}
+
+      - name: bootstrap
+        run: script/bootstrap --ci
+
+      - name: builds docs
+        run: |
+          source script/setup-env
+          crystal docs
+
+      - name: upload static files as artifact
+        id: deployment
+        uses: actions/[email protected]
+        with:
+          path: docs/
+
+  deploy:
+    name: deploy
+    if: github.ref == 'refs/heads/main' && github.event_name == 'push'
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    permissions:
+      pages: write
+      id-token: write
+
+    steps:
+      - name: deploy to GitHub Pages
+        id: deployment
+        uses: actions/[email protected]