Update inputs and runs to reflect docker change

action.yml

@@ -23,10 +23,12 @@ inputs:
     description: "The path the artifact was produced on."
     required: true
 
-outputs:
-  status:
-    description: "The workflow status."
-
 runs:
-  main: dist/index.js
-  using: node20
+  using: docker
+  image: Dockerfile
+  args:
+    - ${{inputs.artifact_path}}
+    - ${{inputs.gradescope_assignment_id}}
+    - ${{inputs.course_id}}
+    - ${{inputs.gradescope_username}}
+    - ${{inputs.gradescope_password}}

src/index.ts

@@ -9,7 +9,6 @@ import {
   navigate_to_uploader_page,
   upload_zip_file,
 } from "./gradescope_assignment_uploader";
-import * as fs from "node:fs";
 
 // load from inputs
 const artifact_path = process.argv[1]