CODEWITHSUNDEEP
dockercommand-line
Dan
Dan

Reputation: 12705

How can I containerize a command that takes a filename as an argument?

I have a program written in C that takes two filenames as arguments, one as input and another as output. I would like to put this command-line program into a docker container for portability and consistency, and to be able to pass files from the host OS as command line arguments when the container is invoked.

That is, I have a program that is typically invoked:

progname inputfile outputfile

and I would like to be able to invoke it as:

docker [options] inputfile outputfile progname

in some order and have inputfile and outputfile refer to files on the host OS.

How can I create a docker container that is able to take filenames on the host OS as arguments?

Upvotes: 1

Views: 65

Answers (1)

George Tseres
George Tseres

Reputation: 498

What you want to create is an image, i.e. the template for containers. You then want to mount the host OS volume when creating new containers with docker run. For that, check this page. What you want to do is:

docker run -itd -v <host_directory>/<filename>:<container_directory>/<filename> <image_name> <container_name> <cmd_or_shell_to_run>

Upvotes: 1

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