Companies who need every engineer to "Do Everything™" are doing it wrong. A team may need to cover a lot of ground, but by putting together folks who have different skills. It's a management skill to assemble a team with diverse experience, rather than only hiring individuals who are "a team on their own".

I don't think you should feel excluded from "Software Engineering" just because you don't have a passion for managing containers. We need people who can write great code in the world, too!