GitLab CI/CD hello world examples

These are my notes for creating "hello world" and "docker hello world" GitLab CI/CD pipelines.

GitLab CI/CD hello world (gitlab repo) ¶

• create git repo, push it to gitlab, and set origin. Replace saltycrane with your username.

  mkdir gitlab-ci-cd-hello-world
  cd gitlab-ci-cd-hello-world
  git init
  touch .gitignore
  git add .
  git commit -m 'first commit'
  git push --set-upstream [email protected]:saltycrane/gitlab-ci-cd-hello-world.git --all
  git remote add origin [email protected]:saltycrane/gitlab-ci-cd-hello-world.git
  

• add a .gitlab-ci.yml file

  build-hello:
    script:
      - echo "hello world"
  

• commit and push

  git add .
  git commit -m 'add ci/cd config'
  git push origin
  

• see the pipeline run (replace saltycrane with your username): https://gitlab.com/saltycrane/gitlab-ci-cd-hello-world/-/pipelines

GitLab CI/CD Docker hello world (gitlab repo) ¶

• create git repo, push it to gitlab, and set origin. Replace saltycrane with your username.

  mkdir gitlab-ci-cd-docker-hello-world
  cd gitlab-ci-cd-docker-hello-world
  git init
  touch .gitignore
  git add .
  git commit -m 'first commit'
  git push --set-upstream [email protected]:saltycrane/gitlab-ci-cd-docker-hello-world.git --all
  git remote add origin [email protected]:saltycrane/gitlab-ci-cd-docker-hello-world.git
  

• add a Dockerfile file

  FROM alpine
  RUN echo "hello"
  

• add a .gitlab-ci.yml file

  variables:
    DOCKER_TLS_CERTDIR: "/certs"
  
  build-docker:
    image: docker:latest
    services:
      - docker:dind
    script:
      - docker build -t hello .
  

• commit and push

  git add .
  git commit -m 'add Dockerfile and ci/cd config'
  git push origin
  

• see the pipeline run (replace saltycrane with your username): https://gitlab.com/saltycrane/gitlab-ci-cd-docker-hello-world/-/pipelines