debos: Add Plebian repository and install devicetree package

Package publishing for now is still done manually, but this
is good enough to get it out to people.

Closes #12.

Author: CounterPillow

debos-recipes/debian-quartz64.yaml

@@ -35,7 +35,12 @@ actions:
       echo "deb http://deb.debian.org/debian bookworm-updates main contrib non-free non-free-firmware" >> /etc/apt/sources.list
 
   - action: overlay
-    description: Copy apt config for Sid
+    description: Copy Plebian keyring
+    source: overlays/keyrings/
+    destination: /usr/share/keyrings/
+
+  - action: overlay
+    description: Copy apt config for Sid and Plebian
     source: overlays/apt/
     destination: /etc/apt/
 
@@ -137,6 +142,13 @@ actions:
     chroot: true
     command: u-boot-update
 
+  - action: apt
+    description: Install Plebian devicetrees
+    update: true
+    recommends: true
+    packages:
+      - devicetrees-plebian-quartz64
+
   - action: run
     description: Set up user
     chroot: true

debos-recipes/overlays/apt/sources.list.d/plebian.sources

@@ -0,0 +1,5 @@
+Types: deb
+URIs: https://aptly.fratti.ch/bookworm/
+Suites: bookworm
+Components: main
+Signed-By: /usr/share/keyrings/plebian-build-key.gpg