New prebuilt templates - Arch, Ubuntu and Mint, for 4.0 and 4.1

Hi

I’ve recently uploaded some new pre-built templates for 4.0, and 4.1
An updated Arch Linux, Ubuntu Focal, and a new Mint (uma).

All my templates, packages and repositories, are signed with
my Qubes Signing key - you can get this from any key server. You
should check this against other sources - https://qubes.3isec.org,
the Qubes-Users mailing list, GitHub,
maybe another key server over Tor.

You should do something like this, in a Fedora disposable - make sure
you have enough space in the qube you use to download.
Download the template you want from https://qubes.3isec.org/

Once you have downloaded and confirmed my “Qubes OS signing key”, add it to
your rpm keyring:
sudo rpm --import <downloaded_key>

Check the signature on the template:
rpm -K <Template_package_name>
If all is well you will see “digests signatures OK”

Once you are satisfied, install the Template.
To do this you will need to copy it to dom0.
In dom0, run:
qvm-run -p <disposable> 'cat <location of template_package>' > <template_package_name>

Then, in dom0, install:
sudo dnf install <template_package_name>

For example, if you have downloaded an Arch template in a qube called
downloader, and the file is in /home/user/Downloads:
qvm-run -p downloader 'cat /home/user/Downloads/qubes-template-archlinux-4.0.6-202109222348.noarch.rpm ' > arch.rpm
(You can name the package whatever you like in dom0.)

Then install with: sudo dnf install arch.rpm

I also provide repositories for Qubes packages for Arch and Ubuntu,
which are (fairly) regularly updated. Details at https://qubes.3isec.org

If you need help, have issues, or find any problems, answer here.

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