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Command does not make sense in a container.

Problematic code:

FROM busybox
RUN top

Correct code:

FROM busybox

Rationale:

For some POSIX commands it makes no sense to run them in a Docker container because they are bound to the host or are otherwise dangerous (like ´shutdown´, ´service´, ´ps´, ´free´, ´top´, ´kill´, ´mount´, ´ifconfig´). Interactive utilities also don't make much sense (´nano´, ´vim´).