Docs feedback: Add codeclimate debug option

Problem to solve

• What product or feature(s) affected? Code quality page, how to debug it when it does not work as intended.
• What docs or doc section affected? https://docs.gitlab.com/ee/ci/examples/code_quality.html
• Is there a problem with a specific document, or a feature/process that's not addressed sufficiently in docs? How to get some logs from the pipeline, because by default you will only get a loooong pipeline which will timeout: error: (CC::CLI::Analyze::EngineFailure) engine eslint ran for 900 seconds and was killed

Proposal

Please define how to enable logs on codequality docker image. I tried adding docker run --env CODECLIMATE_DEBUG=1 but it does not help - there must be a way to enable some logs though.