The problem with deploying using Docker is that you no longer have any of the advantages of Docker, unless you count a Dockerfile as an advantage. But it’s really just a non-standard way to write shell scripts to configure a system.
Deploying using Docker containers means hosting multiple nested operating systems on multiple separate hardware, and then trying to coordinate them, when you most likely actually want them living on the same machine sharing the same loop back interface (like you have during development) or on the same physical or at least logical network with a hardware firewall between them.
Instead, when you deploy Docker containers to the cloud, they are on different machines (often in different data centers) connected only by a VPC with only primitive software firewalling and no way to monitor the traffic.
Docker is meant to run isolated systems together, to share resources. You get none of that benefit. But the hosting provider does, at your cost.
Deploying using Docker containers means hosting multiple nested operating systems on multiple separate hardware, and then trying to coordinate them, when you most likely actually want them living on the same machine sharing the same loop back interface (like you have during development) or on the same physical or at least logical network with a hardware firewall between them. Instead, when you deploy Docker containers to the cloud, they are on different machines (often in different data centers) connected only by a VPC with only primitive software firewalling and no way to monitor the traffic.
Docker is meant to run isolated systems together, to share resources. You get none of that benefit. But the hosting provider does, at your cost.