3 YAML tips for better pipelines

This post provides three YAML tips for improving GitLab CI/CD pipelines: 1. Utilize formatting tools and linters (like GitLab's CI lint) to ensure correct syntax and indentation. 2. Keep YAML configurations simple by including only necessary data and visualizing complex data with pseudo-configs. 3. Reuse configuration through the `include` keyword for external files, `extends` for job templates, and anchors for duplicating content within a file. It also highlights the availability of CI/CD pipeline templates.