* `erlang-xmerl`
* `git`
* Development Tools
+* `cmake`
#### Optional packages used in this guide
* Install some tools, which are needed later:
```shell
-sudo apk add git build-base
+sudo apk add git build-base cmake
```
### Install Elixir and Erlang
#### Further reading
-* [Backup your instance](../administration/backup.md)
-* [Hardening your instance](../configuration/hardening.md)
-* [How to activate mediaproxy](../configuration/howto_mediaproxy.md)
-* [Updating your instance](../administration/updating.md)
+{! backend/installation/further_reading.include !}
## Questions