git context support

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

action.yml

@@ -10,6 +10,9 @@ inputs:
   builder:
     description: "Builder instance"
     required: false
+  source:
+    description: "Context to build from. Can be either local or a remote bake definition"
+    required: false
   files:
     description: "List of bake definition files"
     required: false
@@ -45,9 +48,6 @@ inputs:
   set:
     description: "List of targets values to override (eg. targetpattern.key=value)"
     required: false
-  source:
-    description: "Remote bake definition to build from"
-    required: false
 
 outputs:
   metadata: