FTP上传文件在Docker容器中失败

我有一个使用库apache commons-net的spring boot应用程序， 我有一个在AWS EC2上运行的FTP服务器。 Filezilla正常连接并上传文件。 本地应用正常连接并上传文件。 当我使用Docker运行此应用程序时，该应用程序成功连接到ftp，但无法上传文件。 回复代码是：500

Dockerfile：

FROM openjdk:11
RUN mkdir /app
COPY build/libs/aws-batch1-1.0.0.jar /app/aws-batch1.jar
ENTRYPOINT ["java","-jar","/app/aws-batch1.jar","Test"]

映像构建命令：

docker build -t aws-batch1 .

图像运行命令：

docker run aws-batch1

代码连接FTP：

private boolean connectFTPServer() throws IOException {
        LOGGER.info("CONNECT");
        boolean flg = true;
        try {
            ftpClient.connect(FTP_SERVER_ADDRESS, FTP_SERVER_PORT_NUMBER);
            ftpClient.login(FTP_USERNAME, FTP_PASSWORD);
        } catch (IOException e) {
            LOGGER.error("CONNECT FAILED", e);
            flg = false;
        }

        int replyCode = ftpClient.getReplyCode();
        LOGGER.info("replyCode: " + replyCode);
        if (!FTPReply.isPositiveCompletion(replyCode)) {
            flg = false;
        }
        if (!flg) {
            throw new IOException();
        }
        return flg;
    }

代码上传文件：

public boolean uploadFile(byte[] content, String fileName)
            throws IOException {
        boolean flg = false;
        LOGGER.info("uploadFile");
        if (connectFTPServer()) {
            LOGGER.info("connectFTPServer success");
            LOGGER.info("content: " + new String(content));
            try (InputStream is = new ByteArrayInputStream(content)) {
                ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
                boolean storeFile = ftpClient.storeFile(fileName, is);
                LOGGER.info("storeFile: " + storeFile);
                LOGGER.info("ftpClient.getReplyCode(): " + ftpClient.getReplyCode());

                flg = storeFile &&
                        ftpClient.getReplyCode() ==
                                FTPReply.CLOSING_DATA_CONNECTION;
                if (!flg) {
                    throw new IOException("FTP error");
                }
            } finally {
                closeConnectionFTPClient();
            }
        }
        return flg;
    }

在本地成功上传时记录：

uploadFile
CONNECT
replyCode: 230
connectFTPServer success
content: test
storeFile: true
ftpClient.getReplyCode(): 226

在Docker上载失败时记录日志：

uploadFile
CONNECT
replyCode: 230
connectFTPServer success
content: test
storeFile: false
ftpClient.getReplyCode(): 500

请帮我。我是否缺少任何步骤？

更新：谢谢@Metin我已经更新了连接到ftp客户端的代码，如下所示：

private boolean connectFTPServer() throws IOException {
        LOGGER.info("CONNECT");
        boolean flg = true;
        try {
            ftpClient.connect(FTP_SERVER_ADDRESS, FTP_SERVER_PORT_NUMBER);
            ftpClient.login(FTP_USERNAME, FTP_PASSWORD);
            ftpClient.enterLocalPassiveMode();
        } catch (IOException e) {
            LOGGER.error("CONNECT FAILED", e);
            flg = false;
        }

        int replyCode = ftpClient.getReplyCode();
        LOGGER.info("replyCode: " + replyCode);
        if (!FTPReply.isPositiveCompletion(replyCode)) {
            flg = false;
        }
        if (!flg) {
            throw new IOException();
        }
        return flg;
    }

而且有效！

问题来源：Stack Overflow