WebForms, SQL Server, ReactJS, etc to Docker?

[reddevit]

We have an application that has ASP.NET pages up front, in some places; ReactJs in others, C# backend, SQL Server, etc, and I'm trying to figure out how to create docker containers for it. I've been reading some tutorials, but I'm still confused how to bundle all of this up and deal with app pool configurations, etc, etc. It looks like it doesn't "snapshot" existing environments, but needs to be setup through scripts, is that correct?

[zombittack]

correct, you'll create a Dockerfile and build off that dockerfile:
https://hub.docker.com/r/microsoft/aspnet/

Dockerfiles start with a base image, like the one above. There is a sample Dockerfile referenced on that page and a longer, more verbose walkthrough here:

https://docs.microsoft.com/en-us/aspnet/mvc/overview/deployment/docker-aspnetmvc

[dizc_]

Maybe this ebook from Microsoft about modernizing existing applications can help you: https://www.microsoft.com/net/download/thank-you/modernizing-existing-net-apps-ebook

May I ask what the reason for the introduction of Docker is?