fix: ensure control directory has right permissions

Author: Bing Yang

src/installer.js

@@ -91,7 +91,13 @@ class DebianInstaller extends common.ElectronInstaller {
     const dest = path.join(this.stagingDir, 'DEBIAN', 'control')
     this.options.logger(`Creating control file at ${dest}`)
 
-    return common.wrapError('creating control file', async () => this.createTemplatedFile(src, dest))
+    return common.wrapError('creating control file', async () => {
+
+      await this.createTemplatedFile(src, dest);
+
+      const contrlDir = path.join(this.stagingDir, 'DEBIAN');
+      return fs.chmod(contrlDir, 0o755);
+    })
   }
 
   /**