我试图理解为什么我不能使用Docker在给定的Elastic Beanstalk example上升级Ubuntu版本。
这很好用:
FROM ubuntu:12.04
RUN apt-get update
RUN apt-get install -y nginx zip curl
RUN echo "daemon off;" >> /etc/nginx/nginx.conf
RUN curl -o /usr/share/nginx/www/master.zip -L https://codeload.github.com/gabrielecirulli/2048/zip/master
RUN cd /usr/share/nginx/www/ && unzip master.zip && mv 2048-master/* . && rm -rf 2048-master master.zip
EXPOSE 80
CMD ["/usr/sbin/nginx", "-c", "/etc/nginx/nginx.conf"]
这不是:
FROM ubuntu:14.04
RUN apt-get update
RUN apt-get install -y nginx zip curl
RUN echo "daemon off;" >> /etc/nginx/nginx.conf
RUN curl -o /usr/share/nginx/www/master.zip -L https://codeload.github.com/gabrielecirulli/2048/zip/master
RUN cd /usr/share/nginx/www/ && unzip master.zip && mv 2048-master/* . && rm -rf 2048-master master.zip
EXPOSE 80
CMD ["/usr/sbin/nginx", "-c", "/etc/nginx/nginx.conf"]
日志文件给出:“返回非零代码:127”错误。
答案 0 :(得分:3)
命令失败,因为容器中没有/usr/share/nginx/www
目录,但有/usr/share/nginx/html
---> 1911c575617e
Step 4 : RUN curl -o /usr/share/nginx/www/master.zip -L https://codeload.github.com/gabrielecirulli/2048/zip/master
---> Running in d0ad1a5e7a3f
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0Warning: Failed to create the file /usr/share/nginx/www/master.zip: No such
Warning: file or directory
0 324k 0 867 0 0 1969 0 0:02:48 --:--:-- 0:02:48 1965
curl: (23) Failed writing body (0 != 867)
INFO[0000] The command [/bin/sh -c curl -o /usr/share/nginx/www/master.zip -L https://codeload.github.com/gabrielecirulli/2048/zip/master] returned a non-zero code: 23
$ docker run --rm -ti 1911c575617e
root@bfb101f5de87:/# ls -al /usr/share/nginx/www
ls: cannot access /usr/share/nginx/www: No such file or directory
root@bfb101f5de87:/# ls -al /usr/share/nginx
total 12
drwxr-xr-x 3 root root 4096 May 23 11:04 .
drwxr-xr-x 65 root root 4096 May 23 11:04 ..
drwxr-xr-x 2 root root 4096 May 23 11:04 html
提示:Best practice将对apt-get update && apt-get install
使用相同的运行命令。也总是尝试在创建时删除相同运行命令中的临时文件:每个运行命令创建附加映像,因此如果您在一个运行命令中获取文件并在下一个中删除 - 它将仅标记为已删除,但它将不必要的增加图像大小在我的大多数图像中,我使用单一运行命令,对于ubuntu / debian看起来像:
RUN echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections \
&& apt-get update -qq \
&& apt-get install -y -qq ... \
...
&& apt-get clean \
&& rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*