apt-get -> apt

HowtoGitlab/CI.md

@@ -112,8 +112,8 @@ variables:
 
 # Add SSH private key to deploy to prod/staging server
 before_script:
-- apt-get update -y && apt-get install -y rsync
-- 'which ssh-agent || ( apt-get install openssh-client -y )'
+- apt update -y && apt install -y rsync
+- 'which ssh-agent || ( apt install openssh-client -y )'
 - eval $(ssh-agent -s)
 - ssh-add <(echo "$SSH_PRIVATE_KEY")
 - mkdir -p ~/.ssh