fix deployment

.forgejo/workflows/deploy-docs.yaml

@@ -26,12 +26,14 @@ jobs:
       - name: Build website - prod
         if: github.event_name != 'pull_request'
         run: |
+          pnpm install
           pnpm build
 
       - name: Build website - staging
         if: github.event_name == 'pull_request'
         run: |
-          #sed -i "s#site_url: https://didays.de#site_url: https://staging.didays.de/pr${{ github.event.pull_request.number }}/#" mkdocs.yml
+          sed -i "s#base: '/'#base: '/pr${{ github.event.pull_request.number }}'#" astro.config.mjs
+          pnpm install
           pnpm build
 
       - name: Deploy - Prepare keys