Use harbor image and add gitignore for public folder

Signed-off-by: Laszlo Rafael <rlacko99@gmail.com>

.gitignore

+/public
\ No newline at end of file

.gitlab-ci.yml

@@ -16,9 +16,8 @@ build:
 
 prod-ftp:
   stage: deploy
-  image: ubuntu:focal
+  image: harbor.sch.bme.hu/kszk/lftp
   script:
-    - apt-get update && apt-get install -y lftp ca-certificates
     - lftp -e "set dns:order 'inet inet6';
       mirror -R public/ site/kszk/ ; quit"
       -u $FTP_USER,$FTP_PASS $FTP_HOST