Have you used GitLab in your practice and how did you apply its tools?

Yes, GitLab is widely used in practice for source code management and automation of development processes.

The main tools of GitLab that are used include:

• Git repository: storing and version control of code.
• GitLab CI/CD: setting up pipelines for automatic building, testing, and deploying applications.
• Issue Tracker: managing tasks and bugs.
• Merge Requests: code review and merging changes.
• Wiki and documentation: storing technical documentation.

An example of using CI/CD in .gitlab-ci.yml:

stages:
  - build
  - test
  - deploy

build_job:
  stage: build
  script:
    - go build -o myapp

test_job:
  stage: test
  script:
    - go test ./...

deploy_job:
  stage: deploy
  script:
    - ./deploy.sh
  only:
    - main

Thus, GitLab helps organize the entire development and delivery cycle of software.