Fedora 34 Silverblue - website development container

I am trying to set up a website development container in Fedora 34 Silverblue and I do not understand how. I need:

IDE (Atom or VSCode)
Access localhost (Chrome)
Access my repo (bitbucket)

The IDE I download with Flatpak. But how to get all that I need inside a container to work out of? I tried Gnome Boxes but thats not the idea. Toolbox I dont get far with, cant get my IDE in a toolbox with all the other stuff. And just the IDE in Flatpak is not enough. Any help, guidelines, how-to, is much welcomed. Thank you.