Update the website on changes in doc/ folder

Signed-off-by: Martin Tzvetanov Grigorov <mgrigorov@apache.org>

.asf.yaml

@@ -48,3 +48,7 @@ notifications:
   # Send individual PR comments/reviews to issues@
   pullrequests_comment: issues@avro.apache.org
   jira_options: link label worklog
+
+publish:
+  whoami: asf-site
+  subdir: asf-site

.github/workflows/docs.yaml

@@ -0,0 +1,96 @@
+name: Deploy Avro site
+
+on:
+  push:
+    branches:
+      - master
+      - update-site
+    paths:
+      - .github/workflows/docs.yaml
+      - doc/**
+      - lang/c/**
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build-docs:
+    name: Build docs
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout docs sources
+        uses: actions/checkout@v3
+        with:
+          submodules: recursive
+
+      - name: Checkout asf-site branch
+        uses: actions/checkout@v3
+        with:
+          ref: asf-site
+          path: asf-site
+
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 16
+
+      - name: Install NPM dependencies
+        run: |
+          set -x
+          cd doc
+          npm install
+
+      - name: Setup Hugo
+        uses: peaceiris/actions-hugo@v2
+        with:
+          hugo-version: 0.111.3
+          extended: true
+
+      - name: Build docs
+        run: |
+          set -x
+          cd doc
+          hugo --minify --destination ../website --baseURL=/asf-site
+
+      - name: Build C docs
+        run: |
+          set -x
+          sudo apt-get update -q
+          sudo apt-get install -q -y cmake liblzma-dev libsnappy-dev libjansson-dev zlib1g-dev pkg-config asciidoc source-highlight libsource-highlight-dev
+          pushd lang/c
+          ./build.sh clean docs
+          popd
+          mkdir -p website/docs/++version++/api/c/
+          cp -r build/c/docs/index.html website/docs/++version++/api/c/
+
+      - name: Build C++ docs
+        run: |
+          set -x
+          apt-get update -q
+          apt-get install -q -y gcc g++ libboost-all-dev cmake
+          pushd lang/c++
+          ./build.sh clean doc
+          popd
+          mkdir -p website/docs/++version++/api/cpp/html/
+          cp -r lang/c++/doc/html/* website/docs/++version++/api/cpp/html/
+
+      - name: Copy & push the generated HTML
+        run: |
+          set -x
+          cd asf-site/
+          rsync \
+            -a \
+            --delete \
+            --exclude '/.git/' \
+            ../website/ \
+            ./
+          cp ../.asf.yaml .
+          touch .nojekyll
+          git status --porcelain
+          if [ "$(git status --porcelain)" != "" ]; then
+            git config user.name "github-actions[bot]"
+            git config user.email "github-actions[bot]@users.noreply.github.com"
+            git add --all
+            git commit -m 'Publish built docs triggered by ${{ github.sha }}'
+            git push || git push --force
+          fi

doc/config.toml

@@ -263,7 +263,7 @@ url = "http://www.apache.org/security/"
 
 [[params.versions]]
   version = "++version++ (Current)"
-  url = "/docs/++version++/"
+  url = "./docs/++version++/"
 
 [[params.versions]]
   version = "1.11.0"

doc/content/en/docs/++version++/api-c++.md

@@ -2,7 +2,7 @@
 title: "C++ API"
 linkTitle: "C++ API"
 weight: 102
-manualLink: /docs/++version++/api/cpp/html/
+manualLink: ./docs/++version++/api/cpp/html/
 ---
 
 <!--

doc/content/en/docs/++version++/api-c.md

@@ -2,7 +2,7 @@
 title: "C API"
 linkTitle: "C API"
 weight: 101
-manualLink: /docs/++version++/api/c/
+manualLink: ./docs/++version++/api/c/
 ---
 
 <!--

doc/content/en/docs/++version++/api-csharp.md

@@ -2,7 +2,7 @@
 title: "C# API"
 linkTitle: "C# API"
 weight: 103
-manualLink: /docs/++version++/api/csharp/html/
+manualLink: ./docs/++version++/api/csharp/html/
 ---
 
 <!--

doc/content/en/docs/++version++/api-java.md

@@ -2,7 +2,7 @@
 title: "Java API"
 linkTitle: "Java API"
 weight: 100
-manualLink: /docs/++version++/api/java/
+manualLink: ./docs/++version++/api/java/
 ---
 
 <!--

doc/layouts/partials/navbar.html

@@ -25,7 +25,7 @@
 {{/* AVRO-3555: Don't inline the existing logo for now.
 		<span class="navbar-logo">{{ if .Site.Params.ui.navbar_logo }}{{ with resources.Get "icons/logo.svg" }}{{ ( . | minify).Content | safeHTML }}{{ end }}{{ end }}</span><span class="text-uppercase font-weight-bold">{{ .Site.Title }}</span>
 */}}
-		<span class="navbar-logo"><img src="/docs/++version++/logo.svg" width="100" height="30" style="margin: 0 10px"></span><span class="text-uppercase font-weight-bold">{{ .Site.Title }}</span>
+		<span class="navbar-logo"><img src="./docs/++version++/logo.svg" width="100" height="30" style="margin: 0 10px"></span><span class="text-uppercase font-weight-bold">{{ .Site.Title }}</span>
 	</a>
 
 	<div class="td-navbar-nav-scroll ml-md-auto" id="main_navbar">

lang/c/build.sh

@@ -69,6 +69,11 @@ do
       make -C $build_dir test
       ;;
 
+    docs)
+      prepare_build
+      make -C $build_dir docs
+      ;;
+
     dist)
       prepare_build
       cp ../../share/VERSION.txt $root_dir