Ask HN: How do you keep your multiple workstations in sync?

During a regular work week I work a couple of days in a co-working space, the other times either from home or at a client site - and I’m tired of carrying around my laptop all the time.

My dream setup would consist of a couple of low-fi workstations, say a bunch of Intel NUCs or the like, one at each site. Then, whenever I leave in the middle of work at one site, I can go to the other and pick up from there. However, due to sub-optimal internet connectivity I can’t use thin clients with a cloud-based X server. At each work location, I’d need to run my jobs on that machine (either bare metal, or virtualised). Is there a way to e.g. synchronise one virtual machine image across the workstations, when I switch locations? I wouldn’t need to run two workstations at once. Bonus points if a program or configuration, that I install one machine also shows up on the other workstations. I have no special requirements, any Unix-like OS with a window system is OK.

Is anyone of you running such a setup? Or have you found a similar solution? I have that nagging feeling I can’t see the forest for the trees, given that I haven’t with IT setups since 1999. Thanks!