Bitbucket Pipelines
8.0#4 in continuous integration softwareFrom $3.65 a monthFree planWebAPILinuxmacOS
VisitIt suits teams using Bitbucket Cloud that want to automate CI/CD across different platforms and choose hosted or self-hosted runners. The Free plan is limited to five users and 50 monthly build minutes; Premium adds governance controls.
You want what its maker publishes above — check its page for the details.