Set the entrypoint as an absolute path

Author: orj

action.yml

@@ -33,7 +33,7 @@ inputs:
 runs:
   using: "docker"
   image: "docker://ghcr.io/ittybittyapps/reviewdog-action-xcode-issues:latest"
-  entrypoint: "entrypoint.sh"
+  entrypoint: "/entrypoint.sh"
 branding:
   icon: "alert-octagon"
   color: "blue"