Cloud Native CI/CD with GitLab

Defining Variables Based on Conditions

This section shows how rules can be used to override or inject variables at runtime. This allows the same job to adapt its behavior based on branch context without duplicating configuration.

Example:

You want to dynamically customize build arguments and caching behavior based on the branch name:

job:
  variables:
    BUILD_ARGS: "--build-arg arg1=value1 --build-arg arg2=value2"
  rules:
    - if: $CI_COMMIT_REF_NAME =~ /feature-A/
      variables