ci: add forgejo action

.forgejo/workflows/main.yaml

@@ -0,0 +1,20 @@
+on: [push]
+env:
+  HUGO_VERSION: 0.79.0
+jobs:
+  build:
+    runs-on: docker
+    container:
+      image: docker.io/node:20-alpine
+    steps:
+      - uses: actions/checkout@v4
+      - run: |
+        apk add --no-cache wget ca-certificates
+        wget -O hugo.tar.gz https://github.com/gohugoio/hugo/releases/download/v${{ env.HUGO_VERSION }}}/hugo_${{ env.HUGO_VERSION }}_Linux-64bit.tar.gz
+        tar xzf hugo.tar.gz hugo
+        apk add --no-cache nodejs-current npm
+      - run: ./hugo --minify
+      - uses: actions/upload-artifact@v3
+        with:
+          name: public
+          path: public/