How can I pass arguments to a docker container with a python entry-point script using command?

Question

So I\'ve got a docker image with a python script as the entry-point and I would like to pass arguments to the python script when the container is run. I\'ve tried to get the arg

Answer 1

It depends how the entrypoint was set up. If it was set up in "exec form" then you simply pass the arguments after the docker run command, like this:

docker run image -a -b -c

If it was set up in "shell form" then you have to override the entrypoint, unfortunately.

$ docker run --entrypoint echo image hi
hi

You can check the form using docker inspect. If the entrypoint appears to begin with /bin/sh -c, then it is shell form.

References:

• http://docs.docker.com/engine/reference/run/#entrypoint-default-command-to-execute-at-runtime
• http://docs.docker.com/engine/reference/builder/#entrypoint