support ssh deployemnt

ui/src/lib/file.ts

@@ -0,0 +1,17 @@
+export function readFileContent(file: File): Promise<string> {
+  return new Promise((resolve, reject) => {
+    const reader = new FileReader();
+
+    reader.onload = () => {
+      if (reader.result) {
+        resolve(reader.result.toString());
+      } else {
+        reject("No content found");
+      }
+    };
+
+    reader.onerror = () => reject(reader.error);
+
+    reader.readAsText(file);
+  });
+}