Add instructions for unattended-upgrades

maintenance/unattended_upgrades.md

@@ -0,0 +1,20 @@
+# unattended-upgrades
+## What it does
+It automatically updates packages. Pretty straight-forward.
+
+## How to install
+```bash
+sudo apt update && sudo apt install -y unattended-packages
+```
+
+## Configuration
+To configure its behaviour:
+```bash
+sudo nano /etc/apt/apt.conf.d/50unattended-upgrades
+```
+
+For automatic reboots to install updates, make sure the following lines are uncommented and set as:
+```
+Unattended-Upgrade::Automatic-Reboot "true";
+Unattended-Upgrade::Automatic-Reboot-Time "04:00";
+```