Build push action v2

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

src/buildx.ts

@@ -0,0 +1,18 @@
+import * as exec from './exec';
+
+export async function isAvailable(): Promise<Boolean> {
+  return await exec.exec(`docker`, ['buildx'], true).then(res => {
+    if (res.stderr != '' && !res.success) {
+      return false;
+    }
+    return res.success;
+  });
+}
+
+export async function use(builder: string): Promise<void> {
+  return await exec.exec(`docker`, ['buildx', 'use', '--builder', builder], false).then(res => {
+    if (res.stderr != '' && !res.success) {
+      throw new Error(res.stderr);
+    }
+  });
+}