.gitlab-ci.yml

image: gitlab/dind

stages:
  - build
  - deploy

build:
  stage: build
  script:
    - docker login -u gitlab-ci-token -p $CI_BUILD_TOKEN registry.gitlab.com
    - docker run -v ${PWD}:/work fpco/stack-build bash -c 'cd /work && stack setup && stack install && /root/.local/bin/blog build'
    - docker build -t registry.gitlab.com/<you>/<image name> .
    - docker push registry.gitlab.com/<you>/<image name>

deploy:
  stage: deploy
  environment: production
  script:
    - apt-get update -y && apt-get install sshpass -y
    - chmod -x ./deploy.sh
    - sh ./deploy.sh $PASS $CI_BUILD_TOKEN

deploy.sh

sshpass  -p $1 ssh -o StrictHostKeyChecking=no root@x.x.x.x << ENDSSH
   docker login -u gitlab-ci-token -p $2 registry.gitlab.com
   docker stop <image name>
   docker rm <image name>
   docker pull registry.gitlab.com/<you>/<image name>
   docker run --name <image name> -p 80:80 -d registry.gitlab.com/<you>/<image name>
ENDSSH