Docs: adds docusaurus site (#1342)

Author: lukegalbraithrussell

.github/maintainers_guide.md

@@ -78,11 +78,7 @@ By installing App(2) and App(3), you get the followings. Set them as env variabl
 
 ### Generating Documentation
 
-The documentation is built using [Jekyll](https://jekyllrb.com/) and hosted with GitHub Pages. The source files are
-contained in the `docs` directory. Reading the Jekyll configuration in `docs/_config.yml` is helpful to understand how
-the documentation is organized and built.
-
-Refer to the [README](https://github.com/slackapi/java-slack-sdk/blob/master/docs/README.md) for details.
+Refer to the [README](https://github.com/slackapi/java-slack-sdk/blob/main/docs/README.md) for details on editing documentation. 
 
 ### Releasing
 

.github/workflows/docs-deploy.yaml

@@ -0,0 +1,101 @@
+name: Implement docs site
+
+on:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - 'docs/**'
+  push:
+    branches:
+      - main
+    paths:
+      - 'docs/**'
+  workflow_dispatch:
+
+jobs:
+  build:
+    name: Build Docusaurus
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+          cache-dependency-path: docs/package-lock.json
+
+      - name: Install dependencies
+        run: npm ci
+        working-directory: ./docs
+
+      - name: Read version from docs/version-config.yml
+        id: read_version
+        run: |
+          sdkLatestVersionValue=$(grep 'sdkLatestVersion:' docs/version-config.yml | awk '{print $2}')
+          okhttpVersionValue=$(grep 'okhttpVersion:' docs/version-config.yml | awk '{print $2}')
+          slf4jApiVersionValue=$(grep 'slf4jApiVersion:' docs/version-config.yml | awk '{print $2}')
+          kotlinVersionValue=$(grep 'kotlinVersion:' docs/version-config.yml | awk '{print $2}')
+          helidonVersionValue=$(grep 'helidonVersion:' docs/version-config.yml | awk '{print $2}')
+          javaxWebsocketApiVersionValue=$(grep 'javaxWebsocketApiVersion:' docs/version-config.yml | awk '{print $2}')
+          springBootVersionValue=$(grep 'springBootVersion:' docs/version-config.yml | awk '{print $2}')
+          compatibleMicronautVersionValue=$(grep 'compatibleMicronautVersion:' docs/version-config.yml | awk '{print $2}')
+          quarkusVersionValue=$(grep 'quarkusVersion:' docs/version-config.yml | awk '{print $2}')
+          tyrusStandaloneClientVersionValue=$(grep 'tyrusStandaloneClientVersion:' docs/version-config.yml | awk '{print $2}')
+          echo "sdkLatestVersion=$sdkLatestVersionValue" >> $GITHUB_ENV
+          echo "okhttpVersion=$okhttpVersionValue" >> $GITHUB_ENV
+          echo "slf4jApiVersion=$slf4jApiVersionValue" >> $GITHUB_ENV
+          echo "kotlinVersion=$kotlinVersionValue" >> $GITHUB_ENV
+          echo "helidonVersion=$helidonVersionValue" >> $GITHUB_ENV
+          echo "javaxWebsocketApiVersion=$javaxWebsocketApiVersionValue" >> $GITHUB_ENV
+          echo "springBootVersion=$springBootVersionValue" >> $GITHUB_ENV
+          echo "compatibleMicronautVersion=$compatibleMicronautVersionValue" >> $GITHUB_ENV
+          echo "quarkusVersion=$quarkusVersionValue" >> $GITHUB_ENV
+          echo "tyrusStandaloneClientVersion=$tyrusStandaloneClientVersionValue" >> $GITHUB_ENV
+
+      - name: Replace placeholders in .md files
+        run: |
+          DOCS_DIR="./docs/content"
+          find $DOCS_DIR -name "*.md" | while read file; do
+            sed -i "s/sdkLatestVersion/${{ env.sdkLatestVersion }}/g" "$file"
+            sed -i "s/okhttpVersion/${{ env.okhttpVersion }}/g" "$file"
+            sed -i "s/slf4jApiVersion/${{ env.slf4jApiVersion }}/g" "$file"
+            sed -i "s/kotlinVersion/${{ env.kotlinVersion }}/g" "$file"
+            sed -i "s/helidonVersion/${{ env.helidonVersion }}/g" "$file"
+            sed -i "s/javaxWebsocketApiVersion/${{ env.javaxWebsocketApiVersion }}/g" "$file"
+            sed -i "s/springBootVersion/${{ env.springBootVersion }}/g" "$file"
+            sed -i "s/compatibleMicronautVersion/${{ env.compatibleMicronautVersion }}/g" "$file"
+            sed -i "s/quarkusVersion/${{ env.quarkusVersion }}/g" "$file"
+            sed -i "s/tyrusStandaloneClientVersion/${{ env.tyrusStandaloneClientVersion }}/g" "$file"
+          done
+      - name: Build website
+        run: npm run build
+        working-directory: ./docs
+
+      - name: Upload Build Artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: ./docs/build
+
+  deploy:
+    name: Deploy to GitHub Pages
+    if: github.event_name != 'pull_request'
+    needs: build
+
+    # Grant GITHUB_TOKEN the permissions required to make a Pages deployment
+    permissions:
+      pages: write # to deploy to Pages
+      id-token: write # verifies deployment is from an appropriate source
+
+    # Deploy to the github-pages environment
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    runs-on: ubuntu-latest
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

docs/.gitignore

@@ -1,4 +1,3 @@
-_site
-.env
-.jekyll-metadata
-vendor/
+node_modules/
+.docusaurus
+build