The official miner of the coin is in the wallet. Does your docker image contain wallets, making the docker
image a GUI front end to manage a bunch of wallets running on the user's computer?

Managing multiple wallets is not for newbies no matter how much you try to make it look easy.

If you're serious, a wallet manager would be a good product but not as a docker image full of your
selection of coin wallets. It should be a regular program using a web server interface or a custom
GUI front end. In the back end the user should be able to install any wallet they choose.

This would not be for newbies because newbies use online wallets or exchanges instead of installling
a wallet for every coin the they mine. Only coin geeks do that.