Update for s6 v3 and add apparmor (#41)

* Update for s6 v3 and add apparmor

* Adjust from feedback

* Tweak service functionality instructions

* Logging in finish script

* Remove etc/s6 as not used anymore

* Update example/rootfs/etc/services.d/example/finish

Co-authored-by: Franck Nijhof <frenck@frenck.nl>

Co-authored-by: Pascal Vizeli <pvizeli@syshack.ch>
Co-authored-by: Franck Nijhof <frenck@frenck.nl>

example/config.yaml

@@ -1,6 +1,6 @@
 # https://developers.home-assistant.io/docs/add-ons/configuration#add-on-config
 name: Example add-on
-version: "1.1.0"
+version: "1.2.0"
 slug: example
 description: Example add-on
 url: "https://github.com/home-assistant/addons-example/tree/main/example"
@@ -11,6 +11,8 @@ arch:
   - amd64
   - i386
 init: false
+map:
+  - share:rw
 options:
   message: "Hello world..."
 schema: