Yes. Also, the only thing that survives between RUN directives is the disk image so && saves state: start-daemon && configure-daemon-while-running && stop-daem

Yes. Also, the only thing that survives between RUN directives is the disk image so && saves state: start-daemon && configure-daemon-while-running && stop-daemon The point is, I've seen far more && than RUN directives so the decision was backwards.