在构建docker文件时，我得到一个返回的非零代码：8

我正在通过docker建立Kafka和zookeeper；但是，每当我构建映像时，当出现以下情况时，我总是会遇到代码8错误：

wget -q  https://www.apache.org/dist/zookeeper/zookeeper-${ZOOKEEPER_VERSION}/zookeeper-${ZOOKEEPER_VERSION}.tar.gz.asc .

我已经尝试将下载的kafka.sh中的文件格式更改为unix

下面是我的dockerfile：

---

---

如果您转到此链接，则

3.4.13

不再存在

您可以更改为

ENV ZOOKEEPER\u版本3.4.14

，或者只使用现有的ZOOKEEPER Docker图像

FROM Wurstmeister/base

MAINTAINER Wurstmeister

ENV ZOOKEEPER_VERSION 3.4.13

#Download Zookeeper
RUN wget -q http://mirror.vorboss.net/apache/zookeeper/zookeeper-${ZOOKEEPER_VERSION}/zookeeper-${ZOOKEEPER_VERSION}.tar.gz && \
    wget -q https://www.apache.org/dist/zookeeper/KEYS && \
    wget -q https://www.apache.org/dist/zookeeper/zookeeper-${ZOOKEEPER_VERSION}/zookeeper-${ZOOKEEPER_VERSION}.tar.gz.asc && \
    wget -q https://www.apache.org/dist/zookeeper/zookeeper-${ZOOKEEPER_VERSION}/zookeeper-${ZOOKEEPER_VERSION}.tar.gz.md5

#Verify download
RUN md5sum -c zookeeper-${ZOOKEEPER_VERSION}.tar.gz.md5 && \
gpg --import KEYS && \
gpg --verify zookeeper-${ZOOKEEPER_VERSION}.tar.gz.asc

#Install
RUN tar -xzf zookeeper-${ZOOKEEPER_VERSION}.tar.gz -C /opt

#Configure
RUN mv /opt/zookeeper-${ZOOKEEPER_VERSION}/conf/zoo_sample.cfg /opt/zookeeper-${ZOOKEEPER_VERSION}/conf/zoo.cfg

ENV JAVA_HOME /usr/lib/jvm/java-7-openjdk-amd64
ENV ZK_HOME /opt/zookeeper-${ZOOKEEPER_VERSION}
RUN sed  -i "s|/tmp/zookeeper|$ZK_HOME/data|g" $ZK_HOME/conf/zoo.cfg; mkdir $ZK_HOME/data

ADD start-zk.sh /usr/bin/start-zk.sh 
EXPOSE 2181 2888 3888

WORKDIR /opt/zookeeper-${ZOOKEEPER_VERSION}
VOLUME ["/opt/zookeeper-${ZOOKEEPER_VERSION}/conf", "/opt/zookeeper-${ZOOKEEPER_VERSION}/data"]

CMD /usr/sbin/sshd && bash /usr/bin/start-zk.sh