Environment variables in Docker bind mount

Hi there,

I'm trying to mount a folder under my user profile in a docker container, but when run Rider is unable to handle the embedded colon and fails with message "Failed to deploy 'my-cloud-app Image id: my-cloud-app': Illegal char <:> at index 4: $env:USERPROFILE\.aspnet\https".

The equivalent command line runs fine in Powershell and I've been able to map host environment variables through in the Environment variables field.

Is there an alternate syntax I might be able to use to expand an environment variable in the bind mount in Rider?





Hi Scott! 

Could you please try %USERPROFILE% and let me know if it works? Thanks! 


Hi Alexandra,

Thanks for getting back to me. Unfortunately the %USERPROFILE% style syntax doesn't seem to work either:

If I use linux style paths on the windows side (i.e. %USERPROFILE%/.aspnet/https:/https) the error is a little more specific indicating that only absolute paths are supported.

Just to clarify my previous comment, I can pass environment variables into the docker build command but it does seem to be explicitly supported there.

I haven't found a way to pass environment variables to the docker run command using any syntax, I'm guessing it might not be supported at this time?


Hello Seckford,

Thank you for bringing more details. 

Unfortunately, the issue you have faced is a known one with the ID IDEA-289332. You are correct that at the moment passing the variables is not supported in Run Configurations. Please upvote the issue for a bigger awareness and receiving update on the progress. 

Thank you and have a nice day!


I just stumbled on the same annoying bug. It kind of ruins the docker experience within Rider.


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