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Docker File創(chuàng)建鏡像失敗ERROR [3/4] RUN yum -y install vim的解決

更新時間：2024年11月19日 15:21:23 作者：Covirtue

文章描述了在使用DockerFile創(chuàng)建基于CentOS Linux 8的鏡像時遇到的問題,即無法下載vim軟件包的元數(shù)據(jù),問題的原因是CentOS Linux 8的AppStream倉庫沒有可用的URL,為了解決這個問題,作者建議將CentOS版本修改為7,因為CentOS Linux 7的AppStream倉庫通常有可用的URL

問題復(fù)現(xiàn)

使用以下內(nèi)容的Docker File創(chuàng)建鏡像：

FROM centos
MAINTAINER xxxxx<xxxxxxxxx@qq.com>

ENV MYPATH /usr/local
WORKDIR $MYPATH

RUN yum -y install vim
RUN yum -y install net-tools

EXPOSE 80

CMD echo $MYPATH
CMD echo "============"
CMD /bin/bash

錯誤描述：

=> ERROR [3/4] RUN yum -y install vim

------
> [3/4] RUN yum -y install vim:
#0 1.627 CentOS Linux 8 - AppStream 61 B/s | 38 B 00:00
#0 1.664 Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist
------
--------------------
5 | WORKDIR $MYPATH
6 |
7 | >>> RUN yum -y install vim
8 | RUN yum -y install net-tools
9 |
--------------------
ERROR: failed to solve: process "/bin/sh -c yum -y install vim" did not complete successfully: exit code: 1

解決問題方法

分析問題

> [3/4] RUN yum -y install vim:
#0 1.627 CentOS Linux 8 - AppStream 61 B/s | 38 B 00:00
#0 1.664 Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist

由上錯誤描述可知：問題是由于最新版本CentOS Linux 8中vim軟件資源下載失敗導(dǎo)致。

解決問題

添加版本信息并修改為7即可。

FROM centos:7 # 添加版本
MAINTAINER xxxxx<xxxxxxxxx@qq.com>

ENV MYPATH /usr/local
WORKDIR $MYPATH

# 由于centos7停止服務(wù)，這里使用阿里云提供的centos7鏡像.2024-08-04
RUN curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
RUN yum makecache

RUN yum -y install vim
RUN yum -y install net-tools

EXPOSE 80

CMD echo $MYPATH
CMD echo "============"
CMD /bin/bash

完成結(jié)果

[+] Building 34.8s (8/8) FINISHED                                                          
 => [internal] load build definition from mycentos                                    0.0s
 => => transferring dockerfile: 306B                                                  0.0s
 => [internal] load .dockerignore                                                     0.0s
 => => transferring context: 2B                                                       0.0s
 => [internal] load metadata for docker.io/library/centos:7                           0.3s
 => [1/4] FROM docker.io/library/centos:7@sha256:9d4bcbbb213dfd745b58be38b13b996ebb5  0.0s
 => CACHED [2/4] WORKDIR /usr/local                                                   0.0s
 => [3/4] RUN yum -y install vim                                                     29.1s
 => [4/4] RUN yum -y install net-tools                                                2.8s
 => exporting to image                                                                2.2s 
 => => exporting layers                                                               2.2s 
 => => writing image sha256:9a4f44d6f8c3f8cb6e515e5183feb133ff89e3bc0a8b0597b5aec81f  0.0s 
 => => naming to docker.io/library/chengxcentos:1.0                                   0.0s

注意：docker拉取鏡像默認(rèn)為最新版本。