Elton Stoneman walks us through several additions to Docker support on Windows Server 2019:
5. Volume mounts have usable directory paths
Docker volumes are how you separate storage from the lifecycle of your containers. You attach a volume to a container, and it surfaces as a directory in the container’s filesystem. Your app writes to
C:\jenkins(or whatever path you mount) and the data actually gets stored in the volume, which could be storage on the Docker host – like a RAID array on the server – or a separate storage unit in the datacenter, or a cloud storage service.The mount inside the container should be transparent to the app, but actually in Windows Server 2016 the implementation used symlink directories, and that caused a few problems.
Elton notes that Docker support on Windows is now approaching that of Linux, so check out some of the gaps that have been filled with the latest server release.