Copado Essentials makes it easy to schedule daily test execution as well as reviewing code coverage result. To get started, create a CI job as below.
Because this is only a test execution and not a deployment, the source org is of no significance. You you can select an arbitrary source org, in this instance. The target org is where your tests will be executed.
Hit 'Save' then go to 'Deploy Options', change 'Test Level' to 'Run Local test' and check the 'Include unit test coverage result' option, as below.
You're all set. Your CI job will kick off at the specified time. A build history will be created so you can review test results and coverage statistics.