Add example recipes to build a single image

Sample recipes with new recipe action

Fixes: APERTIS-5675

apertis-sample-image-basesdk.yaml

@@ -11,6 +11,7 @@
 architecture: {{ $architecture }}
 
 actions:
+  # Create DevRoot ospack to be included in the Base SDK image
   - action: recipe
     description: Create devroot ospack for {{ $devroot_arch }}
     recipe: apertis-ospack-devroot.yaml
@@ -22,11 +23,13 @@ actions:
       timestamp: {{ $timestamp }}
       ospack: {{ $devpack }}
 
+  # Reset the rootfs from previous action to start Base SDK build from a clean rootfs
   - action: run
     description: Reset rootfs
     chroot: false
     command: find ${ROOTDIR} -maxdepth 1 -mindepth 1 -exec rm -rf {} \;
 
+  # Create base rootfs for the Base SDK
   - action: recipe
     description: Create ospack for {{ $suite }} {{ $type }} {{ $architecture }}
     recipe: apertis-ospack-{{ $type }}.yaml
@@ -36,6 +39,7 @@ actions:
       suite: {{ $suite }}
       timestamp: {{ $timestamp }}
 
+  # Create the Base SDK image based on OSTree rootfs created during previous action
   - action: recipe
     description: Create image {{ $image }} for {{ $suite }} {{ $type }} {{ $architecture }}
     recipe: apertis-image-sdk.yaml