Gitlab simple auto devops. Add both files into your project repository and customize according to your need.

.gitlab-ci.yml

image: alpine:latest

pages:
  only:
  - master
  stage: deploy
  before_script:
  - 'command -v ssh-agent >/dev/null || ( apk add --update openssh )'
  - eval $(ssh-agent -s)
  - echo "$SSH_PRIVATE_KEY" | tr -d '\r' | ssh-add -
  - mkdir -p ~/.ssh
  - chmod 700 ~/.ssh
  - ssh-keyscan $VM_IPADDRESS >> ~/.ssh/known_hosts
  - chmod 644 ~/.ssh/known_hosts
  script:
  - ssh $SSH_USER@$VM_IPADDRESS "cd /path/to/project/dir && ./server_deploy.sh"
  # artifacts:
  #   paths:
  #    - public

server_deploy.sh

#!/bin/bash
set -e

echo "Deploying application ..."

# Enter maintanance mode
php artisan down
    # Update codebase
    git pull origin master

    # Install dependencies based on lock file
    composer install --no-interaction --prefer-dist --optimize-autoloader

    # Migrate database
    #php artisan migrate --force

    # Clear cache
    php artisan optimize

    # Reload PHP to update opcache
    #echo "" | sudo -S service php7.4-fpm reload
# Exit maintenance mode
php artisan up

#if [[ `ps -acx|grep httpd|wc -l` > 0 ]]; then
#    chown -R apache:apache storage/ bootstrap/cache/
#fi

# for nginx write permission problem
if [[ `ps -acx|grep nginx|wc -l` > 0 ]]; then
    chown -R www-data:www-data storage/ bootstrap/cache/
fi

echo "🚀 Application deployed!"