gitlab pipeline with remote cache

gitlab-build-docker-remote-cache.yaml

stages:
  - build
  - test
  - deploy
    
variables:
  # disable Docker TLS validation
  DOCKER_TLS_CERTDIR: ""
  DOCKER_HOST: "tcp://localhost:2375"

services:
  - docker:stable-dind

docker-build:
  image: docker:stable
  stage: build
  script:
    - docker pull my-registry/hello:latest || true
    - docker build --cache-from my-registry/hello:latest -t hello:latest .

    - docker tag hello:latest my-registry/hello:${CI_COMMIT_SHORT_SHA}
    - docker tag hello:latest my-registry/hello:latest

    - docker push my-registry/hello:${CI_COMMIT_SHORT_SHA}
    - docker push my-registry/hello:latest