当目录名称包含冒号时，无法在 docker 容器中挂载卷

Question

I cannot mount a volume to a docker container when the directory name contains a colon (:)

The name of the directory is 2012-08-05-00:16:37 and I prefer not renaming the directory. I tried:

docker run -it --name test1 \
-v /host_system_path/2012-08-05-00\:16\:37/:/container_path/2012-08-05-00\:16\:37/ 
image_name

I get the error:

docker: Error response from daemon: invalid bind mount spec.See 
'docker run --help'.

If I rename the directory without spaces or only with hyphens, then the directory is mounted into the container without any issues. Can someone point out how can I solve the problem when the directory contains a colon.

I am on Ubuntu:16.04 and Docker version 17.06.0-ce.

Answer 1

It's an open issue with Docker. But in your case, why would docker run -it --name test1 -v /host_system_path:/container_path image_name not be sufficient?

Answer 2

Colons are currently not supported when specifying directory mappings via -v , and it seems you cannot escape them either.

You need to leverage --mount instead:

docker run ... --mount type=bind,source=/some:colon:file,destination=/container-path ...

In the worst of cases, you may of course alternatively still work around this limitation with a temporary system link ( ln -s ) or rename the target directory temporarily.