Add mirror to README

README.md

@@ -22,36 +22,61 @@ It also hosts preview packages for various Linux distributions:
 Check out the [latest releases](https://github.com/shiftkey/desktop/releases) to
 help out with testing on your distribution.
 
-## packagecloud
+## Repositories
 
-We use [PackageCloud](https://packagecloud.io/) for distributing
-the installers for Debian and RPM-based distributions. These are not free services,
-so if you can afford to help with these costs please [**Sponsor**](https://github.com/sponsors/shiftkey)
-the project using the link in the header.
+You can use your operating system's package manager to install `github-desktop` and
+keep it up to date on Debian/RPM based distributions. There are two options for this:
+
+* A [PackageCloud](https://packagecloud.io/) repository with excellent global connectivity
+  but very limited bandwidth. This option will stop working each month when the bandwidth
+  limit is reached.
+* A [mirror](https://mattwthomas.com/mirrors/) in the US which has effectively infinite
+  bandwidth and performs well in most regions (especially the Americas and Europe).
+
+PackageCloud, which both options depend on, is not a free service. So, if you can afford to
+help with these costs please [**Sponsor**](https://github.com/sponsors/shiftkey) the project
+using the link in the header.
 
 ### Debian/Ubuntu distributions
 
-To setup the package repository, run these commands:
+First install our GPG certificate:
+
+```sh
+$ wget -qO - https://mirror.mwt.me/ghd/gpgkey | sudo tee /etc/apt/trusted.gpg.d/shiftkey-desktop.asc > /dev/null
+```
+
+To setup the package repository, run one of these commands:
 
 ```sh
-$ wget -qO - https://packagecloud.io/shiftkey/desktop/gpgkey | sudo tee /etc/apt/trusted.gpg.d/shiftkey-desktop.asc > /dev/null
+# if you want to use packagecloud.io
 $ sudo sh -c 'echo "deb [arch=amd64] https://packagecloud.io/shiftkey/desktop/any/ any main" > /etc/apt/sources.list.d/packagecloud-shiftkey-desktop.list'
-$ sudo apt update
+
+# if you want to use the US mirror
+$ sudo sh -c 'echo "deb [arch=amd64] https://mirror.mwt.me/ghd/deb/ any main" > /etc/apt/sources.list.d/packagecloud-shiftkey-desktop.list'
 ```
 
 Then install GitHub Desktop:
 
 ```sh
-$ sudo apt install github-desktop
+$ sudo apt update && sudo apt install github-desktop
 ```
 
 ### Red Hat/CentOS/Fedora distributions
 
-To setup the package repository, run these commands:
+First install our GPG certificate:
 
 ```sh
-$ sudo rpm --import https://packagecloud.io/shiftkey/desktop/gpgkey
-$ sudo sh -c 'echo -e "[shiftkey]\nname=GitHub Desktop\nbaseurl=https://packagecloud.io/shiftkey/desktop/el/7/\$basearch\nenabled=1\ngpgcheck=0\nrepo_gpgcheck=1\ngpgkey=https://packagecloud.io/shiftkey/desktop/gpgkey" > /etc/yum.repos.d/shiftkey-desktop.repo'
+$ sudo rpm --import https://mirror.mwt.me/ghd/gpgkey
+```
+
+To setup the package repository, run one of these commands:
+
+```sh
+# if you want to use packagecloud.io
+$ sudo sh -c 'echo -e "[shiftkey]\nname=GitHub Desktop\nbaseurl=https://packagecloud.io/shiftkey/desktop/el/7/\$basearch\nenabled=1\ngpgcheck=0\nrepo_gpgcheck=1\ngpgkey=https://mirror.mwt.me/ghd/gpgkey" > /etc/yum.repos.d/shiftkey-desktop.repo'
+
+# if you want to use the US mirror
+$ sudo sh -c 'echo -e "[shiftkey]\nname=GitHub Desktop\nbaseurl=https://mirror.mwt.me/ghd/rpm\nenabled=1\ngpgcheck=0\nrepo_gpgcheck=1\ngpgkey=https://mirror.mwt.me/ghd/gpgkey" > /etc/yum.repos.d/shiftkey-desktop.repo'
 ```
 
 Then install GitHub Desktop:
@@ -65,9 +90,22 @@ $ sudo dnf install github-desktop
 ```
 
 ### OpenSUSE distribution
+
+
+First install our GPG certificate:
+
+```sh
+$ sudo rpm --import https://mirror.mwt.me/ghd/gpgkey
+```
+
+To setup the package repository, run one of these commands:
+
 ```sh
-$ sudo rpm --import https://packagecloud.io/shiftkey/desktop/gpgkey
-$ sudo sh -c 'echo -e "[shiftkey]\nname=GitHub Desktop\nbaseurl=https://packagecloud.io/shiftkey/desktop/el/7/\$basearch\nenabled=1\ngpgcheck=0\nrepo_gpgcheck=1\ngpgkey=https://packagecloud.io/shiftkey/desktop/gpgkey" > /etc/zypp/repos.d/shiftkey-desktop.repo'
+# if you want to use packagecloud.io
+$ sudo sh -c 'echo -e "[shiftkey]\nname=GitHub Desktop\nbaseurl=https://packagecloud.io/shiftkey/desktop/el/7/\$basearch\nenabled=1\ngpgcheck=0\nrepo_gpgcheck=1\ngpgkey=https://mirror.mwt.me/ghd/gpgkey" > /etc/zypp/repos.d/shiftkey-desktop.repo'
+
+# if you want to use the US mirror
+$ sudo sh -c 'echo -e "[shiftkey]\nname=GitHub Desktop\nbaseurl=https://mirror.mwt.me/ghd/rpm\nenabled=1\ngpgcheck=0\nrepo_gpgcheck=1\ngpgkey=https://mirror.mwt.me/ghd/gpgkey" > /etc/zypp/repos.d/shiftkey-desktop.repo'
 ```
 
 Then install GitHub Desktop:
@@ -84,6 +122,8 @@ Arch Linux users can install GitHub Desktop from the
 
 `gnome-keyring` is required and the daemon must be launched either at login or when the X server is started. Normally this is handled by a display manager, but in other cases following the instructions found on the [Arch Wiki](https://wiki.archlinux.org/index.php/GNOME/Keyring#Using_the_keyring_outside_GNOME) will fix the issue of not being able to save login credentials.
 
+GitHub Desktop is also available cross-platform as a [Flatpak](https://github.com/flathub/io.github.shiftey.Desktop) and [AppImage](https://appimage.github.io/GitHubDesktop/).
+
 ## Known issues
 
 If you're having troubles with Desktop, please refer to the [Known issues](docs/known-issues.md#linux)