How to use CMD or ENTRYPOINT with based image that uses ENTRYPOINT

Question

I am using base image ibmcom/mq which uses ENTRYPOINT to execute its process: ENTRYPOINT ["mq.sh"] If in my Dockerfile I use CMD the parent image works fine, but my CMD doesn't seem to be executed. If in my Dockerfile I use ENTRYPOINT my command is running but then the parent ENTRYPOINT doesn't seem to be running.

What am i missing here?

Answer 1

OK. I now understand that if I use CMD it acts as a parameter to the ENTRYPOINT and if I use ENTRYPOINT it overrides it. I thought this is so only within the same Dockerfile.