Add external hard drive to container

[paradoxgrowth]

Hello Everyone,

I am using a Crashplan container to back up my files and I would like to include an external hard drive to my backup. Unfortuanly I can't seem to figure out how to add it to the shared folders list. I tried the following command:

Code: Select all

-v /share/external/DEV3301:ro \

But I get the error below. What am I doing wrong?
docker: Error response from daemon: invalid volume specification: '/share/external/DEV3301:ro'.