feat(ci): remove broken symbolic links

.gitlab-ci.yml

@@ -38,7 +38,8 @@ Deploy to production:
     # don't forget to create ~/web/latest folder manually in the initial configuration on the VM!
     - ssh -p $SSHPORT $SSHCONNECT "mkdir -p ~/web/r3lab_$CI_JOB_ID"
     - scp -P $SSHPORT -r build/* $SSHCONNECT:~/web/r3lab_$CI_JOB_ID
-    - ssh -p $SSHPORT $SSHCONNECT "cd ~/web/latest && ln -fs ../r3lab_$CI_JOB_ID/* . && cd .. && find . -type d -name 'r3lab*' -not -newermt '-1 minutes' -exec rm -rf {} +"
+    # Make a symbolic link to newly copied files, then remove old tasks' files, and remove all broken symbolic links
+    - ssh -p $SSHPORT $SSHCONNECT "cd ~/web/latest && ln -fs ../r3lab_$CI_JOB_ID/* . && cd .. && find . -type d -name 'r3lab*' -not -newermt '-1 minutes' -exec rm -rf {} + && find -L ~/web/latest -type l -delete"
 
 
 ## Backups