diff --git a/.forgejo/workflows/ci.yaml b/.forgejo/workflows/ci.yaml
index 1492053..cacab7b 100644
--- a/.forgejo/workflows/ci.yaml
+++ b/.forgejo/workflows/ci.yaml
@@ -10,9 +10,38 @@ jobs:
       - name: Retrieve files
         shell: bash
         run: |
-          echo Sync files with server
-          echo "We are in $PWD"
           git clone ${{ gitea.server_url }}/${{ gitea.repository }} www
-          cd www
-          echo "We have : $(ls -lta)"
+      - name: Synchronize files
+        shell: bash
+        run: |
+          rsync -avzlh --delete --filter='P sidebar/*' * /home/webmaster/site-chalec.org/articles/
+          echo $(git diff-tree --no-commit-id --name-only -r master | grep stl || find . -name "*.stl" -printf "%P\n") > /home/webmaster/site-chalec.org/.modified
+      - run: echo "Job ended with status '${{ job.status }}'."
+
+  tests:
+    runs-on: linux_amd64
+    steps:
+      - name: Syntax & validity checks
+        shell: bash
+        run: |
+          cd /home/webmaster/site-chalec.org
+          files=$(cat .modified)
+          if [ -z "$files" ]; then 
+            files=$(find . -name "*.stl" -printf %P)
+          errors=0
+          for file in $files
+          do
+            echo "### Test de $file"
+            stl log clean
+            stl check -F $file | grep -e "Err" -e "erreur de" -e "Aucun fichier" && errors=$((errors+1)) # error if err is read in standard output
+          done
+          [ $errors -gt 0 ] && false
+          for file in $files
+          do
+            echo "Test supplémentaire de $file"
+            stl log clean
+            stl check -F $file &> /dev/null
+            stl check -F $file &> /dev/null
+          done
+          [ $errors -gt 0 ] && false
       - run: echo "Job ended with status '${{ job.status }}'."