Looks like we've been ignoring the "cause" field for
ContainerizationError when sent over xpc. Add the cause to the
`ContainerXPCError` message field instead of a new `cause` field since
`Error` is not encodable. The goal here is just to preserve information.
Signed-off-by: Kathryn Baldauf <k_baldauf@apple.com>
This PR resolves the problem of dropped progress updates and ensures the
accuracy of the information provided in the progress bar. Additionally,
it adds the displaying of the finished state to the progress bar.
Requires merging and tagging
https://github.com/apple/containerization/pull/91.
Kathryn Baldauf