Build dokka in CI

Author: object-Object

.github/workflows/docs.yml

@@ -31,9 +31,19 @@ jobs:
           activate-environment: true
           enable-cache: true
 
+      - uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 17
+
+      - uses: gradle/actions/setup-gradle@v4
+
       - name: Sync dependencies
         run: uv sync --frozen --no-dev
 
+      - name: Build API docs
+        run: ./gradlew :dokkaGenerate
+
       - id: build
         uses: hexdoc-dev/actions/build@v1
         env:
@@ -71,8 +81,6 @@ jobs:
           release: ${{ inputs.release }}
           site-url: ${{ needs.build-hexdoc.outputs.pages-url }}
 
-      # if you want to add extra things to your website (eg. Javadoc/Dokka), add it to _site/dst/docs here
-
       - name: Deploy to Pages
         uses: hexdoc-dev/actions/deploy-pages@v1
         with: