That is unnecessarily harsh. Docker legitimately represents a new idea, and some claim, a better idea. Yes, it won't run on RHEL5; but Java probably did not run on DEC mainframes either (back when its selling point was Write once run anywhere).
The question seems to be this: does this container model represent a step forward? I think it does. (And is it hyped a bit too much? Probably :-)
The question seems to be this: does this container model represent a step forward? I think it does. (And is it hyped a bit too much? Probably :-)