Any instructions for running in Docker via Linux (Ubuntu 20.04.1)? I run a couple dozen containers but they are all pre-built images. Did you build your own image from source?
Here is the basic guide to use docker for nopcommerce.
I assume you have an idea about how docker works as above tutorial is giving just very basic idea. Moreover, Yes. We build our own image from source and sometimes we use existing image and extend it as needed for project. You can choose what you want based on your project requirements.