docs: change docs build dir to _build

Author: machow

.github/workflows/ci.yml

@@ -113,9 +113,9 @@ jobs:
           npm install -g netlify-cli
           # push main branch to production, others to preview --
           if [ "${ALIAS}" == "main" ]; then
-            netlify deploy --dir=_build --prod
+            netlify deploy --dir=docs/_build --prod
           else
-            netlify deploy --dir=_build --alias="${ALIAS}"
+            netlify deploy --dir=docs/_build --alias="${ALIAS}"
           fi
         env:
           NETLIFY_SITE_ID: ${{ secrets.NETLIFY_SITE_ID }}

docs/_quarto.yml

@@ -1,5 +1,6 @@
 project:
   type: website
+  output-dir: _build
   resources:
     - objects.json