tier parameter

README.md

@@ -12,6 +12,9 @@ See [action.yml](action.yml).
     # Which repos to use. Can be stable, testing, staging
     deps: 'stable'
 
+    # Which tier of repos to use. 0 for system, 1 for world, etc.
+    tier: '1'
+
     # Username intended to be used for publishing artifacts. Wihtout a proper post-entrypoint.sh script to
     # utilize it, this input does nothing.
     username: 'anonymous'