Docker镜像无法运行

我已经build立了一个泊坞窗图像，现在当试图运行容器我收到以下错误信息：

$ docker run myimage [dumb-init] /docker-entrypoint.sh: No such file or directory 

有任何想法吗？

另外文件docker-entrypoint.sh存在于镜像上：

 $ docker run --entrypoint=/bin/ls myimage -l /docker-entrypoint.sh -rwxr-xr-x 1 root root 724 Aug 23 09:50 /docker-entrypoint.sh FROM ubuntu:16.04 MAINTAINER Gareth Rushgrove "[e-mail]" ARG ssh_prv_key ARG ssh_pub_key ENV PUPPET_SERVER_VERSION="2.7.2" DUMB_INIT_VERSION="1.1.0" UBUNTU_CODENAME="xenial" PUPPETSERVER_JAVA_ARGS="-Xms256m -Xmx256m" PATH=/opt/puppetlabs/server/bin:/opt/puppetlabs/puppet/bin:/opt/puppetlabs/bin:$PATH LABEL org.label-schema.vendor="Puppet" \ org.label-schema.url="https://github.com/puppetlabs/puppet-in-docker" \ org.label-schema.name="Puppet Server (No PuppetDB)" \ org.label-schema.license="Apache-2.0" \ org.label-schema.version=$PUPPET_SERVER_VERSION \ org.label-schema.vcs-url="https://github.com/puppetlabs/puppet-in-docker" \ org.label-schema.vcs-ref="a2b1fbbc73177ddc3def23d167f9beb9c3ef9f6c" \ org.label-schema.build-date="2017-02-21T17:25:14Z" \ org.label-schema.schema-version="1.0" \ com.puppet.dockerfile="/Dockerfile" RUN apt-get update && \ apt-get install -y wget=1.17.1-1ubuntu1 git && \ wget https://apt.puppetlabs.com/puppetlabs-release-pc1-"$UBUNTU_CODENAME".deb && \ wget https://github.com/Yelp/dumb-init/releases/download/v"$DUMB_INIT_VERSION"/dumb-init_"$DUMB_INIT_VERSION"_amd64.deb && \ dpkg -i puppetlabs-release-pc1-"$UBUNTU_CODENAME".deb && \ dpkg -i dumb-init_"$DUMB_INIT_VERSION"_amd64.deb && \ rm puppetlabs-release-pc1-"$UBUNTU_CODENAME".deb dumb-init_"$DUMB_INIT_VERSION"_amd64.deb && \ apt-get update && \ apt-get install --no-install-recommends -y puppetserver="$PUPPET_SERVER_VERSION"-1puppetlabs1 && \ apt-get clean && \ rm -rf /var/lib/apt/lists/* && \ gem install --no-rdoc --no-ri r10k COPY puppetserver /etc/default/puppetserver COPY logback.xml /etc/puppetlabs/puppetserver/ COPY request-logging.xml /etc/puppetlabs/puppetserver/ RUN puppet config set autosign true --section master VOLUME /etc/puppetlabs/code/ \ /etc/puppetlabs/puppet/ssl/ \ /opt/puppetlabs/server/data/puppetserver/ COPY docker-entrypoint.sh / # Add the keys and set permissions RUN mkdir -p /root/.ssh && \ chmod 0700 /root/.ssh && \ echo "$ssh_prv_key" > /root/.ssh/id_rsa && \ echo "$ssh_pub_key" > /root/.ssh/id_rsa.pub && \ chmod 600 /root/.ssh/id_rsa && \ chmod 600 /root/.ssh/id_rsa.pub && \ echo "Host github.com\n\tStrictHostKeyChecking no\n" >> /root/.ssh/config EXPOSE 8140 ENTRYPOINT ["dumb-init", "/docker-entrypoint.sh"] CMD ["foreground" ] COPY Dockerfile / 

Answer 1

文件docker-entrypoint.sh不是图像的一部分，但它在Dockerfile中定义。

当您使用“Dockerfile”创build图像时，此文件将复制到图像中。

你可以在github中看到mysql的例子。

https://github.com/docker-library/mysql/tree/master/5.6

您可以使用以下命令将Dockerfile用于构build的映像

 docker build -t mysql -f Dockerfile . 

而且你将运行这个命令的图像，而不需要在运行命令中定义为入口点

 docker run --name mysql 

在Dockerfile里面

 ENV STARTUP_SCRIPT=/usr/local/bin/start-up.sh COPY nginx/start-up.sh $STARTUP_SCRIPT ENTRYPOINT $STARTUP_SCRIPT