As a business owner/coder with small team thikning about Docker container security is very very annoying. Any way to skip it all? Any idea for multi-tenant Doc

As a business owner/coder with small team thikning about Docker container security is very very annoying. Any way to skip it all? Any idea for multi-tenant Docker/K8s free setup? Something which will work for the next 10 years and all small micro-services/API will be isolated. I do love "git push dokku master" developer experience with Dokku though https://github.com/dokku https://github.com/dokku but it's based on Docker. Which way I should look at? KVM/QEMU? Firecracker? https://firecracker-microvm.github.io https://firecracker-microvm.github.io My imagination tells me to be with tool which are inside of Linux already ... or some very well tested tool like Nginx and limit CI/CD with Github as they seems will stay in business till the end of my life ... I dont want to be the part of someone else ecosystem. I just want to self-sufficient, self-hosted and secure. Is it too much to wish?