Fix CI config

.gitlab-ci.yml

 image: jekyll/builder
 
+stages:
+  - build
+  - deploy
+
 variables:
   JEKYLL_ENV: production
   LC_ALL: C.UTF-8
   GIT_SUBMODULE_STRATEGY: recursive
 
-stages:
-- build
-- deploy
-
 before_script:
-- apt install rsync
-- ./scripts/ci_fix_baseurl.sh
+  - apt install lftp
+  - ./scripts/ci_fix_baseurl.sh
 
-build:
+build-jekyll:
   stage: build
   cache:
     key: gems
@@ -23,7 +23,7 @@ build:
   - bundle install
   - jekyll build -d public
 
-production:
+deploy-prod:
   stage: deploy
   script:
   - ./scripts/ci_deploy_site.sh public
@@ -32,9 +32,10 @@ production:
 
 pages:
   stage: deploy
+  script:
+    - echo "Nothing to do."
   artifacts:
     paths:
     - public
   only:
   - develop
-