Simple iOS Project with working bitrise.yml included in the root of the project that builds iOS .ipa and runs tests.
Create a new project in Bitrise using this repo as you normally would. Use the bitrise.yml from the repo to define your workflows.
In order to sign the app during the deploy workflow archive step, you must set a valid provisioning profile and signing certificate in the bitrise.yml (BITRISE_PROFILE_ID and BITRISE_CODE_SIGNING_IDENTITY env vars) and upload those to your account. More details can be found in the internal wiki.