image: docker:latest

services:
    - docker:dind

stages:
    - build
    - deploy

before_script:
    - echo "Before script..."
    - echo $CI_REGISTRY_USER
    - echo $CI_REGISTRY_PASSWORD
    - echo $CI_REGISTRY
    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
    # Setup SSH deploy keys
    - 'which ssh-agent || ( apk --update add openssh-client )'
    - eval $(ssh-agent -s)
    - echo -e "$SSH_PRIVATE_KEY" > key
    - chmod 600 key
    - ssh-add key
    - mkdir -p ~/.ssh
    - '[[ -f /.dockerenv ]] && echo -e "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config'

build:
    stage: build
    script:
        - docker pull $CI_REGISTRY_IMAGE:latest || true
        - docker build --cache-from $CI_REGISTRY_IMAGE:latest --tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA --tag $CI_REGISTRY_IMAGE:latest .
        # - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
        - docker push $CI_REGISTRY_IMAGE:latest
    only: 
        - develop

deploy:
    stage: deploy
    script:
        - ls ~/.ssh/
        - ssh alazhar_domain@34.87.6.133 /bin/bash "ls"
    only:
        - develop

$ ssh alazhar_domain@34.87.6.133 /bin/bash "cd docker && docker-compose up"
 Warning: Permanently added '34.87.6.133' (ECDSA) to the list of known hosts.
 /bin/bash: cd: No such file or directory