Add build workflow

.forgejo/workflows/build.yaml

@@ -0,0 +1,27 @@
+on:
+  push:
+    branches:
+      - main
+jobs:
+  build:
+    runs-on: docker
+    env:
+      hugo_version: "0.133.1"
+      hugo_destination: "public"
+    steps:
+      - name: Download Hugo
+        working-directory: /tmp
+        run: |
+          wget https://github.com/gohugoio/hugo/releases/download/v${hugo_version}/hugo_extended_${hugo_version}_Linux-64bit.tar.gz
+          tar zxf hugo_extended_${hugo_version}_Linux-64bit.tar.gz
+          mv hugo /usr/local/bin/hugo
+      - uses: actions/checkout@v4
+      - name: Build Hugo site
+        run: hugo -d ${hugo_destination}
+      - name: Create tarball
+        run: tar zcf /tmp/html.tar.gz  ${hugo_destination}
+      - name: Upload tarball
+        uses: actions/upload-artifact@v3
+        with:
+          name: html.tar.gz
+          path: /tmp/html.tar.gz