setup ci cd gitlab

C++
Step 1:
Create .gitlab-ci.yml file (root folder)

Step 2:
Open .gitlab-ci.yml file: fill something below

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image: ubuntu:18.04

before_script:
  - apt-get update -qy
  - apt-get install -y lftp

build:
  script:
    # Sync to FTP
    - lftp -e "set ftp:ssl-allow no; open xxx.yyy.zzz.uuu; user ftp_account ftp_password; mirror -X .* -X .*/ --reverse --verbose ./ ./; bye"

--------------------
NOTE: 
ftp_account: MUST set here
ftp_password: MUST set here

link ref
https://savjee.be/2019/04/gitlab-ci-deploy-to-ftp-with-lftp/
Source

Also in C++: