bash 为什么“docker run”会出现“没有这样的文件或目录”的错误？
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Why does "docker run" error with "no such file or directory"?
提问by Kingamere
I am trying to run a container which runs an automated build. Here is the dockerfile:
我正在尝试运行一个运行自动构建的容器。这是 dockerfile：
FROM ubuntu:14.04
MAINTAINER pmandayam
# update dpkg repositories
RUN apt-get update
# install wget
RUN apt-get install -y wget
# get maven 3.2.2
RUN wget --no-verbose -O /tmp/apache-maven-3.2.2.tar.gz http://archive.apache.or
g/dist/maven/maven-3/3.2.2/binaries/apache-maven-3.2.2-bin.tar.gz
# verify checksum
RUN echo "87e5cc81bc4ab9b83986b3e77e6b3095 /tmp/apache-maven-3.2.2.tar.gz" | md5
sum -c
# install maven
RUN tar xzf /tmp/apache-maven-3.2.2.tar.gz -C /opt/
RUN ln -s /opt/apache-maven-3.2.2 /opt/maven
RUN ln -s /opt/maven/bin/mvn /usr/local/bin
RUN rm -f /tmp/apache-maven-3.2.2.tar.gz
ENV MAVEN_HOME /opt/maven
# remove download archive files
RUN apt-get clean
# set shell variables for java installation
ENV java_version 1.8.0_11
ENV filename jdk-8u11-linux-x64.tar.gz
ENV downloadlink http://download.oracle.com/otn-pub/java/jdk/8u11-b12/$filename
# download java, accepting the license agreement
RUN wget --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie
" -O /tmp/$filename $downloadlink
# unpack java
RUN mkdir /opt/java-oracle && tar -zxf /tmp/$filename -C /opt/java-oracle/
ENV JAVA_HOME /opt/java-oracle/jdk$java_version
ENV PATH $JAVA_HOME/bin:$PATH
# configure symbolic links for the java and javac executables
RUN update-alternatives --install /usr/bin/java java $JAVA_HOME/bin/java 20000 &
& update-alternatives --install /usr/bin/javac javac $JAVA_HOME/bin/javac 20000
# install mongodb
RUN echo 'deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen
' | sudo tee /etc/apt/sources.list.d/mongodb.list && \
apt-get update && \
apt-get --allow-unauthenticated install -y mongodb-org mongodb-org-s
erver mongodb-org-shell mongodb-org-mongos mongodb-org-tools && \
echo "mongodb-org hold" | dpkg --set-selections && \
echo "mongodb-org-server hold" | dpkg --set-selections && \
echo "mongodb-org-shell hold" | dpkg --set-selections &&
\
echo "mongodb-org-mongos hold" | dpkg --set-selectio
ns && \
echo "mongodb-org-tools hold" | dpkg --set-selec
tions
RUN mkdir -p /data/db
VOLUME /data/db
EXPOSE 27017
COPY build-script /build-script
CMD ["/build-script"]
I can build the image successfully but when I try to run the container I get this error:
我可以成功构建映像，但是当我尝试运行容器时，出现此错误：
$ docker run mybuild
no such file or directory
Error response from daemon: Cannot start container 3e8aa828909afcd8fb82b5a5ac894
97a537bef2b930b71a5d20a1b98d6cc1dd6: [8] System error: no such file or directory
what does it mean 'no such file or directory'?
“没有这样的文件或目录”是什么意思？
Here is my simple script:
这是我的简单脚本：
#!/bin/bash
sudo service mongod start
mvn clean verify
sudo service mongod stop
I copy it like this: COPY build-script /build-script
我像这样复制它：COPY build-script /build-script
and run it like this: CMD ["/build-script"] not sure why its not working
并像这样运行它： CMD ["/build-script"] 不知道为什么它不起作用
回答by Adrian Mouat
Using serviceisn't going to fly - the Docker base images are minimal and don't support this. If you want to run multiple processes, you can use supervisor or runit etc.
使用service不会成功 - Docker 基础镜像很少，不支持这一点。如果要运行多个进程，可以使用 supervisor 或 runit 等。
In this case, it would be simplest just to start mongo manually in the script e.g. /usr/bin/mongod &or whatever the correct incantation is.
在这种情况下，最简单的方法是在脚本中手动启动 mongo，例如/usr/bin/mongod &或任何正确的咒语。
BTW the lines where you try to clean up don't have much effect:
顺便说一句，您尝试清理的行没有太大影响：
RUN rm -f /tmp/apache-maven-3.2.2.tar.gz
...
# remove download archive files
RUN apt-get clean
These files have already been committed to a previous image layer, so doing this doesn't save any disk-space. Instead you have to delete the files in the same Dockerfile instruction in which they're added.
这些文件已经提交到先前的图像层，因此这样做不会节省任何磁盘空间。相反，您必须在添加它们的同一 Dockerfile 指令中删除文件。
Also, I would consider changing the base image to a Java one, which would save a lot of work. However, you may have trouble finding one which bundles the official Oracle JDK rather than OpenJDK if that's a problem.
此外，我会考虑将基本映像更改为 Java 映像，这将节省大量工作。但是，如果有问题，您可能很难找到捆绑官方 Oracle JDK 而不是 OpenJDK 的工具。
