java - 使用 docker-java 从 Amazon ECR 拉取镜像

Question

我在使用 docker-java 客户端从 Amazon ECR 拉取图像时遇到问题。 ECR注册中心登录认证成功，但无法从仓库中拉取特定镜像。奇怪的是，使用 bash 登录 ECR 并使用 docker 提取图像是可行的。

我正在使用 3.0 版的 java-docker 库 ( https://github.com/docker-java/docker-java/ )。任何有关如何调试或解决此问题的帮助都会很有用。

    // ECR client
    AmazonECRClient ecrClient = new AmazonECRClient(awsCredentialsProvider);
    GetAuthorizationTokenRequest getAuthTokenRequest = new GetAuthorizationTokenRequest();
    List<String> registryIds = new ArrayList<String>();
    registryIds.add("accountid");
    getAuthTokenRequest.setRegistryIds(registryIds);

    // Get Authorization Token
    GetAuthorizationTokenResult getAuthTokenResult = ecrClient.getAuthorizationToken(getAuthTokenRequest);
    AuthorizationData authData = getAuthTokenResult.getAuthorizationData().get(0);
    String userPassword = StringUtils.newStringUtf8(Base64.decodeBase64(authData.getAuthorizationToken()));
    String user = userPassword.substring(0, userPassword.indexOf(":"));
    String password = userPassword.substring(userPassword.indexOf(":")+1);

    DockerClientConfigBuilder config = new DockerClientConfigBuilder();
    config.withDockerHost("unix:///var/run/docker.sock");
    config.withDockerTlsVerify(false);
    config.withRegistryUsername(user);
    config.withRegistryPassword(password);
    config.withRegistryUrl(authData.getProxyEndpoint());
    config.build();

    DockerCmdExecFactory dockerCmdExecFactory = new DockerCmdExecFactoryImpl();
    //Docker client
    DockerClient dockerClient = DockerClientBuilder.getInstance(config)
        .withDockerCmdExecFactory(dockerCmdExecFactory)
    .build();

    // Response
    AuthResponse response = dockerClient.authCmd().exec();
    System.out.println(response.getStatus()); 

    // Pull image
    PullImageCmd pullImageCmd = dockerClient.pullImageCmd(respositoryname);
    pullImageCmd
        .exec(new PullImageResultCallback())
        .awaitSuccess(); 

标准输出是:

    Login Succeeded
    Exception in thread "main" com.github.dockerjava.api.exception.DockerClientException: Could not pull image: unauthorized: authentication required

Answer 1

需要将客户端的AuthConfig传入pull命令。

PullImageCmd pullImageCmd = dockerClient
    .pullImageCmd(respositoryname)
    .withAuthConfig(dockerClient.authConfig());