util: fix isValidURL

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

__tests__/util.test.ts

@@ -198,9 +198,12 @@ describe('isValidUrl', () => {
   test.each([
     ['https://github.com/docker/buildx.git', true],
     ['https://github.com/docker/buildx.git#refs/pull/648/head', true],
+    ['git@github.com:moby/buildkit.git', false],
+    ['git://github.com/user/repo.git', false],
+    ['github.com/moby/buildkit.git#main', false],
     ['v0.4.1', false]
   ])('given %p', async (url, expected) => {
-    expect(Util.isValidUrl(url)).toEqual(expected);
+    expect(Util.isValidURL(url)).toEqual(expected);
   });
 });
 

src/util.ts

@@ -65,13 +65,14 @@ export class Util {
     }
   }
 
-  public static isValidUrl(url: string): boolean {
+  public static isValidURL(urlStr: string): boolean {
+    let url;
     try {
-      new URL(url);
+      url = new URL(urlStr);
     } catch (e) {
       return false;
     }
-    return true;
+    return url.protocol === 'http:' || url.protocol === 'https:';
   }
 
   public static async powershellCommand(script: string, params?: Record<string, string>) {