docs: add packages article

docs/en/SUMMARY.md

@@ -91,6 +91,7 @@
   * [Soldering safety](tb.md)
   * [LED strip (legacy)](leds_old.md)
   * [Contribution Guidelines](contributing.md)
+  * [COEX packages repository](packages.md)
   * [Migration to v0.20](migrate20.md)
   * [Migration to v0.22](migrate22.md)
 * [Events](events.md)

docs/en/contributing.md

@@ -96,3 +96,7 @@ Prepare your article and send it as a pull request to the [Clover repository](ht
 ## Easy way
 
 If the above instructions are too difficult for you, send your fixes and new articles by e-mail (<a href="mailto:okalachev@gmail.com">okalachev@gmail.com</a>) or in Telegram messenger (user <a href="tg://resolve?domain=okalachev">@okalachev</a>).
+
+## Publishing packages
+
+You also can publish a package, that extends Clover functionality, into the official [COEX Debian repository](packages.md).

docs/en/packages.md

@@ -0,0 +1,27 @@
+# COEX packages repository
+
+COEX provides an open [Debian-repository](https://wiki.debian.org/DebianRepository) with ROS Noetic related prebuilt binary pacakges for `armhf` architecture.
+
+> **Info** Repository URL: http://packages.coex.tech.
+
+The repository is already addedd in [RPi image](image.md) and may be used for simple installation of additional ROS packages.
+
+## Packages publishing
+
+You can make a Pull Request in a git repository with packages, adding or updating your package (a file with `.deb` extension), that relates to Clover or ROS. After merging your package will be available for installation with `apt` utility:
+
+```bash
+sudo apt install ros-noetic-clover-some-feature
+```
+
+Packages, that extend Clover functionality are recommended to be named with `clover_` prefix, e. g. `clover_some_feature`.
+
+## Using on a normal Raspberry Pi OS
+
+On a normal Raspberry Pi OS, the repository may be added to the sources list, this way:
+
+```bash
+wget -O - 'http://packages.coex.tech/key.asc' | apt-key add - 
+echo 'deb http://packages.coex.tech buster main' >> /etc/apt/sources.list
+sudo apt update
+```