look up a tutorial on “dockerfile” as you’re essentially making one that installs your app.
Dockerfiles are basically “install” scripts that define how to set up a new machine with your application.
You’ll want to start with a base docker image that already has 90% of what you need.
look up docker hub nginx images and just create a docker file to populate your app to the nginx that’s already been installed there. Use the nginx image as your “source image” in docker.
It acts like a virtual machine template to launch your own docker image