Update manifest/manifest.yaml

Update StartOS manifest configuration

manifest/manifest.yaml

@@ -8,15 +8,16 @@ license: MIT
 description:
   short: Bitcoin watch-only wallet and label manager
   long: |
-    Munin-bitcoin is a Bitcoin watch-only wallet service
-    for StartOS with support for transaction monitoring
-    and BIP-329 label import and export.
+    Munin-bitcoin is a Bitcoin monitoring service for StartOS.
+    It provides watch-only wallet monitoring with planned
+    support for BIP-329 label import and export.
 
-root: /
+main:
+  type: docker
+  image: munin-bitcoin:latest
 
-assets:
-  license: LICENSE
-
-containers:
-  main:
-    image: munin-bitcoin:latest
+health-checks:
+  - name: Munin service
+    type: script
+    script: |
+      echo "Munin-bitcoin is running"