GitLab CI/CD Configuration Guide

In enterprise DevOps work, I build and maintain GitLab CI/CD workflows from code submission to production deployment. This article summarizes the practical configuration patterns I use most often. GitLab CI/CD Foundation GitLab Runner Deployment Self-hosted runners are useful when a team needs controlled network access, private registry connectivity, or predictable runtime behavior. # Install GitLab Runner curl -L "https://packages.gitlab.com/install/repositories/runner/gitlab-runner/script.deb.sh" | sudo bash sudo apt-get install gitlab-runner # Register runner sudo gitlab-runner register \ --url "https://gitlab.company.com/" \ --registration-token "YOUR_TOKEN" \ --executor "docker" \ --docker-image "alpine:latest" \ --description "Production Runner" \ --tag-list "production,docker" For Docker-based builds, the runner configuration needs to match the team’s security and build requirements. Docker-in-Docker is convenient, but it should be used intentionally because privileged mode increases risk.