add pipeline for autodeployment

# For more information, see: https://docs.gitlab.com/ee/ci/yaml/index.html#stages

# predefined variables https://docs.gitlab.com/ee/ci/variables/predefined_variables.html

stages:

  - publish

  - deploy

publish:

  stage: publish

  image: docker:cli

  services:

    - docker:dind

  variables:

    DOCKER_IMAGE_NAME: $CI_REGISTRY_IMAGE:latest

  before_script:

    - echo "CI_REGISTRY_IMAGE $CI_REGISTRY_IMAGE"

    - echo "DOCKER_IMAGE_NAME $DOCKER_IMAGE_NAME"

    - echo "CI_REGISTRY $CI_REGISTRY"

    - echo "DOCKER_HOST $DOCKER_HOST"

    - echo "CI_COMMIT_BRANCH $CI_COMMIT_BRANCH"

    - echo "CI_DEFAULT_BRANCH $CI_DEFAULT_BRANCH"

    - docker info

    - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY

  rules:

    - if: $CI_COMMIT_BRANCH == "main"

      exists:

        - docker/Dockerfile

  environment: Development

  script:

    - echo "Build Docker image..."

    - docker build -t $DOCKER_IMAGE_NAME . -f docker/Dockerfile

    - echo "Publish Docker image..."

    - docker push $DOCKER_IMAGE_NAME

    - echo "image successfully published."

deploy-demo:

  stage: deploy

  image: ubuntu:24.04

  variables:

    DOCKER_IMAGE_NAME: $CI_REGISTRY_IMAGE:latest

  before_script:

    - apt-get -yq update

    - apt-get -yqq install ssh

    - install -m 600 -D /dev/null ~/.ssh/id_rsa

    - echo "$SSH_KEY" | base64 -d > ~/.ssh/id_rsa

    - ssh-keyscan -p $SSH_PORT -H $SSH_HOST  > ~/.ssh/known_hosts

    - cat ~/.ssh/known_hosts

  script:

    - ssh $SSH_USER@$SSH_HOST -p $SSH_PORT "docker service update --force --image $DOCKER_IMAGE_NAME stack_resumedemo_back"

  after_script:

    - rm -rf ~/.ssh

  rules:

    - if: $CI_COMMIT_BRANCH == "main"

  environment: Development