update config

.woodpecker.yml

@@ -1,10 +1,14 @@
 pipeline:
   build:
     image: gitnet.fr/deblan/mkdocs
-    environments:
+    environment:
+      - SITE_URL=https://doc.murph-project.org/
     commands:
-      - sed -i 's/# site_url/site_url/' mkdocs.yml
-      - mkdocs build
+      if [ -n "$SITE_URL" ]; then
+        sed -i "s,# site_url: \"{site_url}\",site_url: \"$SITE_URL\"," mkdocs.yml 
+      fi
+      mkdocs build
+
   deploy:
     image: eeacms/rsync
     secrets: [ssh_user_host, ssh_priv_key]

mkdocs.yml

@@ -1,5 +1,5 @@
 site_name: Documentation of Murph
-# site_url: https://doc.murph-project.org/
+# site_url: "{site_url}"
 
 extra_css:
   - /_static/css/extra.css