A Docker Compose configuration for MongoDB 8 Replica Set with three replicas was tested. https://gist.github.com/dbazhenov/fd47167734230d294a4aa10da623d1f2 Add it to the examples in the docker folder and Readme. Blog Post https://percona.community/blog/2025/03/18/setting-up-and-monitoring-mongodb-8-replica-sets-with-pmm-3-using-docker-a-beginner-friendly-guide/