Moved to JS, using JSDOM and added Docker

index.js

@@ -0,0 +1,9 @@
+const Signer = require("./src/Signer")
+
+if (process.argv.length > 2) {
+  const signer = new Signer()
+  const url = process.argv[2]
+
+  const data = signer.sign(url)
+  console.log(data)
+}