# BuildKite The configuration files for BuildKite builds are located in `.buildkite/*.yml`\ BuildKite build are often self-hosted, this means that you may gain excessive privileges to the kubernetes cluster that runs the runners, or to the hosting cloud environment. In order to run an OS command in a workflow that builds pull requests - simply add a `command` instruction to the step. ```yaml steps: - label: "Example Test" command: echo "Hello!" ```