使用docker-java从Amazon ECR提取图像 [英] Pulling image from Amazon ECR using docker-java

问题描述

我面临使用docker-java客户端从Amazon ECR提取图像的问题. ECR注册表登录的身份验证成功，但是无法从存储库中提取特定图像.奇怪的是，使用bash登录ECR并使用docker提取图像.

I am facing an issue with pulling image from Amazon ECR using docker-java client. The authentication of ECR registry login is successful, but unable to pull a specific image from the repository. Strange thing is that logging into ECR using bash and pulling image using docker works.

我正在使用3.0版的java-docker库( https://github.com/docker-java/docker-java/).有关如何调试或解决此问题的任何帮助将非常有用.

I am using 3.0 version of java-docker library (https://github.com/docker-java/docker-java/). Any help on how to debug or solve this issue will be useful.

    // 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(); 

标准输出为:

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

推荐答案

您需要将客户端的AuthConfig传递到pull命令中.

You need to pass the client's AuthConfig into the pull command.

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

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