Yes. But by website in a box, it would have to be as dirt simple as signing up for FB.
So, gramma goes to a web page, clicks the signup, the website deploys a docker image on a webhost and spins up a UI that is not unlike what she is already used to.
Next, comment and "likes". You have to have a comment system that runs on there also. Gramma would invite others to her site by clicking invite. This would generate a specific invite signature for that person and would email it out (gramma would need to know Uncle Fred's email; sorry gramma). Uncle Fred would click the link and be taken to gramma's sight and can comment. All comments stay on gramma's sight. All gramma's content, period, stay's on gramma's sight.
There are some docker images on DockerHub which are very polished along those lines. OwnCloud for storage, Ghost for blogging. You run them with default settings and they open to a nice welcome page with a tutorial and a fully-functional setup.
With a docker UI like Kitematic, it's remarkably similar to an app store experience.
So, gramma goes to a web page, clicks the signup, the website deploys a docker image on a webhost and spins up a UI that is not unlike what she is already used to.
Next, comment and "likes". You have to have a comment system that runs on there also. Gramma would invite others to her site by clicking invite. This would generate a specific invite signature for that person and would email it out (gramma would need to know Uncle Fred's email; sorry gramma). Uncle Fred would click the link and be taken to gramma's sight and can comment. All comments stay on gramma's sight. All gramma's content, period, stay's on gramma's sight.
How does one monetize, however?