Gitlab Pipeline code for a linear deployment via SFTP

gitlab-ci-sftp-linear

stages:
    - Load Libraries
    - Build
    - Deploy Test
    - Deploy Prod

Load Libraries:
    image: node:lts-slim
    when: manual
    stage: Load Libraries
    allow_failure: false
    cache:
        paths:
            - node_modules/
    script:
        - npx pnpm add -g pnpm
        - pnpm install
    artifacts:
        paths:
            - node_modules

Build:
    when: on_success
    image: node:lts-slim
    stage: Build
    allow_failure: false
    dependencies: 
        - Load Libraries
    script:
        - npx pnpm add -g pnpm
        - pnpm run build
    artifacts:
        paths:
            - server
            - build
            - Dockerfile

Deploy Test:
        stage: Deploy Test
        image: jimmyadaro/gitlab-ci-cd:latest
        when: on_success
        environment:
            name: test
        allow_failure: false
        needs: 
            - Build
        dependencies: 
            - Build
        before_script:
            - 'which ssh-agent || ( apt-get install -qq openssh-client )'
            - eval $(ssh-agent -s)
            - ssh-add <(echo "$SSH_PRIVATE_KEY")
            - mkdir -p ~/.ssh
            - '[[ -f /.dockerenv ]] && echo -e "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config'
        script:
            - lftp -d -u $APP_SERVER_USER, -e 'set sftp:auto-confirm true; set sftp:connect-program "ssh -a -x -i ~/.ssh/id_rsa"; mirror -Rnev ./build /var/www/test/frontend/admin-the-pt; exit' sftp://$APP_SERVER_IP:$APP_SERVER_PORT

Deploy Prod:
        stage: Deploy Prod
        image: jimmyadaro/gitlab-ci-cd:latest
        when: on_success
        environment:
            name: prod
        allow_failure: false
        needs:
            - Deploy Test
            - Build
        dependencies: 
            - Build
        before_script:
            - 'which ssh-agent || ( apt-get install -qq openssh-client )'
            - eval $(ssh-agent -s)
            - ssh-add <(echo "$SSH_PRIVATE_KEY")
            - mkdir -p ~/.ssh
            - '[[ -f /.dockerenv ]] && echo -e "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config'
        script:
            - lftp -d -u $APP_SERVER_USER, -e 'set sftp:auto-confirm true; set sftp:connect-program "ssh -a -x -i ~/.ssh/id_rsa"; mirror -Rnev ./build /var/www/prod/frontend/admin-the-pt; exit' sftp://$APP_SERVER_IP:$APP_SERVER_PORT