Comment 8 for bug 1672231

I'd recommend you *don't* use Terminal App for container creation.

The error messages look like a problem in the archives to me. On that hardware the chroot back end is being used which run debootstrap from the http://ports.ubuntu.com/ubuntu-ports archives. The "Couldn't download package" errors sound like the index files at the archives do not match the actual packages somehow. The "Failed to create container" message indicates the debootstrap failed.

I'm suspecting this problems is caused by the Vivid archives getting messed up.