File download fails for paths on mounted volumes (“copy: path not found” in rootfs) #27

Hi!

First of all, thank you for Davit! It’s a great app and makes working with Apple’s container platform a real pleasure.

Description
Downloading a file from the Files browser fails when the file is on a mounted volume. Davit seems to resolve the path against the container’s root filesystem (/run/container//rootfs/...) instead of the path as seen inside the running container, so files on volumes are not found.

Steps to reproduce

Run a container with a named volume mounted at /home/dev.
Create a file inside the container, e.g. echo test > /home/dev/testfile.txt.
In Davit, open the container’s Files tab, navigate to /home/dev and download testfile.txt.

Expected: The file is downloaded to the Mac.

Actual: The download fails with:

internalError: "failed to copy from container " (cause: "internalError: "failed to copy from container (cause: "unknown: "notFound: "copy: path not found '/run/container//rootfs/home/dev/testfile.txt'""")"")

Additional observations

The file exists and is readable inside the container (container exec ls -l /home/dev/testfile.txt works).
Copying the same file to /tmp (not on a mount) and downloading it from there works fine.
The Files browser lists the file on the volume correctly. Only the download fails.

Workaround
Copy the file to a path that isn’t mounted first.

Environment

Davit version: 0.1.38
container platform version: 1.3.1
macOS version: Golden Gate 27.0.1
Mac model / chip: MacBook Pro / Apple M3 Pro

Thanks again for your work on this!
Martin