For those still asking, here are some reasons why containers are often preferred:
In a production environment, a few things are essential for any company: consistency, predictability, isolation, scalability, and orchestration.
Containers allow you to encapsulate the exact environment an app needs; OS layer, dependencies, libraries, and more. On bare metal, environmental drift (different libraries, configs, etc.) can silently break your system, and in production, you often cannot afford failures.
Scalability and orchestration: Containers are ephemeral and declarative. You can describe your desired state (e.g., 10 replicas) and let the orchestrator handle auto-scaling, load balancing, rolling updates, self-healing, and more.
Isolation and security: Containers provide near VM level process isolation. This is a strong security feature, especially when your services are exposed to the internet. If one container is compromised, it does not affect others, reducing the overall attack surface.
Portability across infrastructure: Containers are portable. If you need to switch cloud providers or VPS hosts, containers make it extremely easy. From AWS to Azure, the same container runs the same way everywhere; no manual reconfiguration needed. Just copy the volume, use the same Compose file, and you’re good.
I use containers in my homelab, for my company, and for my clients. They save a lot of headaches and make managing infrastructure much more reliable.
If you care about security, consistency, scalability, and reliability, go with containers. Otherwise, a bare-metal installation is fine. I personally don’t recommend bare metal for anything unless the app can hardly function in a containerized environment. Even then, I prefer using Incus for more flexibility.