pip line fixed

.gitlab-ci.yml

-image: linkml/linkml:1.7
+image: linkml/linkml:latest
 stages:
   - lint
   - validate
@@ -34,14 +34,22 @@ json-schema:
     name: "json-schemas"
     paths:
       - "*.json"
+gen_docs:
+  stage: build-docs
+  script:
+    - ./scripts/gen_doc.sh
+  artifacts:
+        paths:
+        - "docs/"
 
 #Stage - build docs
-build_docs: 
+build_docs:
+    image: squidfunk/mkdocs-material 
     stage: build-docs
-    before_script: 
-        - pip install mkdocs mkdocs-material mkdocs-mermaid2-plugin
+    needs: [gen_docs]
+    before_script:
+        - pip install mkdocs-mermaid2-plugin
     script:
-        - ./scripts/gen_doc.sh
         - mkdocs build -d build
     artifacts:
         paths: