With the advent of Container options like Docker why aren’t we using it? Well not yet because..
Processes on Docker are not as fast as native OS,
There are too many security vectors on docker compared with VPS environment and we consider security as critical,
Orchestration is complicated and most large cloud providers have their own locked in orchestration system. Also if your containers are stuck behind a limited load balancer, you might as well be on one of those super cheap unmanaged shared hosting environments with noisy neighbours.
Docker is great for Large monolithic customers with big budgets and high traffic but not SME’s like you. VPS has been around for a long time and most vulnerabilities are known plus most hosting outages are network based. VPS’s are rock solid.