I have a complete copy of my production environment running locally in vagrant. I can code and run tests (3rd party APIs are all mocked) without any internet co

I have a complete copy of my production environment running locally in vagrant. I can code and run tests (3rd party APIs are all mocked) without any internet connection. I even have all the docs I could need cached offline in Dash. The only thing I am missing is a local pypi to cache my commonly used 3rd party apps. I use my laptop a lot on the go. Trains, Airlines, Pubs, Coffeeshops, and so on. Some places will have Wifi, or others I'll be able to tether. But I don't like to rely on having it to be productive.