Docker
Without passing any commands to docker run
both do the same job. However, when docer run
is used CMD is replaced if an argument was provided to docker run
while ENTRYPOINT will append the arguments to the value defined in the entry point.
You can use both inside the Dockerfile as the parameters of CMD
will be appended to ENTRYPOINT
.
CMD
# docker run ubuntu-sleep sleep 10
FROM ubuntu
CMD sleep
ENTRYPOINT
# docker run ubuntu-sleep 10
FROM ubuntu
ENTRYPOINT ["sleep"]
Kubernetes
It's dead simple, args
in equivalent to CMD
and command
is equivalent to ENTRYPOINT
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