Viewing docker containers as anything more than a bundling and deployment system is a mistake. While they might help with security they will never be completely

Viewing docker containers as anything more than a bundling and deployment system is a mistake. While they might help with security they will never be completely secure and you should architect your deployments with that in mind. Unless you are a giant enterprise shop with the resources to staff a decent sized K8s team, you should use the hosted solutions.