@Test
  public void testGetConfigFromImage() {
    AuthConfig reg1 =
        new AuthConfigBuilder()
            .withServeraddress("https://index.reg1.io/v1")
            .withAuth("reg1")
            .build();

    AuthConfig reg2 =
        new AuthConfigBuilder().withServeraddress("https://reg2.io/v1").withAuth("reg2").build();

    AuthConfig reg3 = new AuthConfigBuilder().withServeraddress("reg3.io").withAuth("reg3").build();

    Config config =
        new ConfigBuilder()
            .addToAuthConfigs(reg1.getServeraddress(), reg1)
            .addToAuthConfigs(reg2.getServeraddress(), reg2)
            .addToAuthConfigs(reg3.getServeraddress(), reg3)
            .build();

    AuthConfig auth1 = RegistryUtils.getConfigForImage("reg1.io/my/image", config);
    assertNotNull(auth1);
    assertEquals(reg1, auth1);
  }