bake: support remote definition when parsing

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

__tests__/buildx/bake.test.e2e.ts

@@ -0,0 +1,43 @@
+/**
+ * Copyright 2023 actions-toolkit authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {beforeEach, describe, expect, jest, test} from '@jest/globals';
+import * as fs from 'fs';
+import * as path from 'path';
+
+import {Bake} from '../../src/buildx/bake';
+import {BakeDefinition} from '../../src/types/bake';
+
+const fixturesDir = path.join(__dirname, '..', 'fixtures');
+
+beforeEach(() => {
+  jest.clearAllMocks();
+});
+
+describe('parseDefinitions', () => {
+  // prettier-ignore
+  test.each([
+    [
+      ['https://github.com/docker/buildx.git#v0.10.4'],
+      ['binaries-cross'],
+      path.join(fixturesDir, 'bake-buildx-0.10.4-binaries-cross.json')
+    ]
+  ])('given %p', async (sources: string[], targets: string[], out: string) => {
+    const bake = new Bake();
+    const expectedDef = <BakeDefinition>JSON.parse(fs.readFileSync(out, {encoding: 'utf-8'}).trim())
+    expect(await bake.parseDefinitions(sources, targets)).toEqual(expectedDef);
+  });
+});