There are a lot of companies looking at the intersection of containers and embedded. Some call it "Fog Computing" others "Edge Computing", others still "Industrial Internet" and so forth. We have a number of use cases on the resin.io website of people using this technology in production today, but some of the larger ones we're not allowed to talk about :(. ResinOS does include a full Docker engine however. It's just that a lot more is needed to do containers right on embedded Linux devices.