哪个文件或目录无法读取？

Question

在我试图建立一个图像的同时，我得到了以下错误。

在这个图片中，我需要下载jenkins，在后台运行jenkins，然后下载jenkins，然后我必须将我的输入提供给cli。

       FROM ubuntu:14.04

    RUN apt-get update && \
    apt-get upgrade -y && \
    apt-get install -y  software-properties-common && \
    add-apt-repository ppa:webupd8team/java -y && \
    apt-get update && \
    echo oracle-java7-installer shared/accepted-oracle-license-v1-1 select true | /usr/bin/debconf-set-selections && \
    apt-get install -f -y oracle-java9-installer && \
    apt install -y default-jre curl wget git nano; \
    apt-get clean


# Install dependencies
RUN apt-get -y update  && \
    apt-get -yqq --no-install-recommends install git bzip2 curl unzip && \
    apt-get update

ENV JAVA_HOME /usr
ENV PATH $JAVA_HOME/bin:$PATH

# copy jenkins war file to the container
ADD http://mirrors.jenkins.io/war-stable/2.107.1/jenkins.war /opt/jenkins.war
RUN chmod 644 /opt/jenkins.war
ENV JENKINS_HOME /jenkins

# configure the container to run jenkins, mapping container port 8080 to that host port
ENTRYPOINT ["nohup","java", "-jar", "/opt/jenkins.war"]
RUN mkdir /jenkins/
RUN echo 2.107.1 > /jenkins/jenkins.install.UpgradeWizard.state
RUN echo 2.107.1 > /jenkins/jenkins.install.InstallUtil.lastExecVersion
EXPOSE 8080
VOLUME /jenkins

#jenkins-cli installation
RUN mkdir -p /jcli
RUN chmod 644 /jcli
RUN curl --insecure -OL http://192.168.99.100:8080/jnlpJars/jenkins-cli.jar \
   --output /jcli/jenkins-cli.jar
VOLUME /ssh
ENV JENKINS_URL "http://192.168.99.100:8080"
ENV PRIVATE_KEY "C:\Users\himn\.ssh/id_rsa"
ENTRYPOINT ["java","-jar","/jcli/jenkins-cli.jar","-noCertificateCheck","-noKeyAuth"]
CMD ["--help"]

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问题

1. 詹金斯-cli正在下载
2. 哪个目录无法找到
3. 我是否需要运行jenkins的后台下载jenkins和工作，以及如何做呢？
4. 以及解决办法

提前谢谢你

我的Dockerfile最后几行

# copy jenkins war file to the container
ADD http://mirrors.jenkins.io/war-stable/2.107.1/jenkins.war /opt/jenkins.war
RUN chmod 644 /opt/jenkins.war
ENV JENKINS_HOME /jenkins

# configure the container to run jenkins, mapping container port 8080 to that host port
ENTRYPOINT ["nohup","java", "-jar", "/opt/jenkins.war"]
RUN mkdir /jenkins/
RUN echo 2.107.1 > /jenkins/jenkins.install.UpgradeWizard.state
RUN echo 2.107.1 > /jenkins/jenkins.install.InstallUtil.lastExecVersion
EXPOSE 8080
VOLUME /jenkins

#jenkins-cli installation
RUN mkdir -p /jcli
RUN chmod 644 /jcli
RUN curl --insecure -OL http://192.168.99.100:8080/jnlpJars/jenkins-cli.jar \
   --output /jcli/jenkins-cli.jar
VOLUME /ssh
ENV JENKINS_URL "http://192.168.99.100:8080"
ENV PRIVATE_KEY "C:\Users\himn\.ssh/id_rsa"
ENTRYPOINT ["java","-jar","/jcli/jenkins-cli.jar","-noCertificateCheck","-noKeyAuth"]
CMD ["--help"]

Answer 1

您可以在将Dockfile入口点更新为

ENTRYPOINT ["java","-jar","/opt/tmp/jenkin-cli.jar","-noCertificateCheck","-noKeyAuth"]

并删除以下几行：

RUN chmod 644 jenkins-cli.jar
WORKDIR /opt/tmp/jenkins-cli
COPY opt/tmp/jenkins-cli.jar ./jenkins-cli 

Answer 2

这看起来像是一个错误。在curl命令(即步骤19/27 )中，--output是/opt/tmp/jenkin-cli.jar，它需要是/opt/tmp/jenkins-cli.jar。

错误声明它无法定位文件/opt/tmp/jenkins-cli.jar，因为您创建了名为jenkin-cli.jar而不是jenkins-cli.jar的文件。

现在，第二个错误是，您在/之前缺少了opt，而且，COPY从一个主机工作到另一个容器，而不是在容器中工作。在这种情况下，您不需要下载CLI来创建容器和映像。