Upgrade docker image to use newer linux image / distribution

[xxkel-sd]

Current linux docker image is based on mcr.microsoft.com/dotnet/runtime-deps:3.1 which is quite old.
The Linux docker image should be updated to a newer version of the mcr.microsoft.com/dotnet/runtime-deps image such as version 6.0

When building your own image on top of the tentacle docker image you sometimes cannot install packages (such as skopeo, buildah and podman) since they are not available from the package manager.