Asp.Net Core Docker鏡像更新系統從wheezy改成stretch

以前寫過一個在Asp.Net Core裏調用System.Drawing.Common繪圖的DEMO，部署到Docker裏運行，須要更新Asp.Net Core鏡像的操做系統。

https://www.cnblogs.com/sunnytrudeau/p/9384620.html

當時用的阿里雲的源

RUN echo "deb http://mirrors.aliyun.com/debian wheezy main contrib non-free \
deb-src http://mirrors.aliyun.com/debian wheezy main contrib non-free \
deb http://mirrors.aliyun.com/debian wheezy-updates main contrib non-free \
deb-src http://mirrors.aliyun.com/debian wheezy-updates main contrib non-free \
deb http://mirrors.aliyun.com/debian-security wheezy/updates main contrib non-free \
deb-src http://mirrors.aliyun.com/debian-security wheezy/updates main contrib non-free" > /etc/apt/sources.list

　　

最近再次跑這個Demo，竟然很差使了，更新系統無效了，建立容器失敗：

Step 4/11 : RUN apt-get update

 ---> Running in 69abe26c3b35

Ign:1 http://mirrors.aliyun.com/debian wheezy InRelease

Ign:2 http://mirrors.aliyun.com/debian wheezy Release

Ign:3 http://mirrors.aliyun.com/debian wheezy/deb all Packages

……

Ign:14 http://mirrors.aliyun.com/debian wheezy/http://mirrors.aliyun.com/debian amd64 Packages

Reading package lists...

W: The repository 'http://mirrors.aliyun.com/debian wheezy Release' does not have a Release file.

E: Failed to fetch http://mirrors.aliyun.com/debian/dists/wheezy/non-free/binary-amd64/Packages  404  Not Found [IP: 124.203.224.198 80]

E: Some index files failed to download. They have been ignored, or old ones used instead.

ERROR: Service 'myweb' failed to build: The command '/bin/sh -c apt-get update' returned a non-zero code: 100

 

百度學習了一下，才知道Asp.Net Core的Docker鏡像是基於debian這個Linux發行版構建的，之前用的版本是wheezy，如今用的新版本是stretch

版本號以及代號     發佈日期

7 wheezy            2013年5月4日

8 Jessie             2015年4月26日

9 stretch            2017年06月17日

 

因此，更新操做系統的源相應的更換一下就能夠了。

RUN echo "deb http://mirrors.aliyun.com/debian stretch main contrib non-free \
deb-src http://mirrors.aliyun.com/debian stretch main contrib non-free \
deb http://mirrors.aliyun.com/debian stretch-updates main contrib non-free \
deb-src http://mirrors.aliyun.com/debian stretch-updates main contrib non-free \
deb http://mirrors.aliyun.com/debian-security stretch/updates main contrib non-free \
deb-src http://mirrors.aliyun.com/debian-security stretch/updates main contrib non-free \
deb http://mirrors.aliyun.com/debian/ stretch-backports main non-free contrib \
deb-src http://mirrors.aliyun.com/debian/ stretch-backports main non-free contrib" > /etc/apt/sources.list

　　

能夠進入運行中的Asp.Net Core容器查看操做系統版本

[root@localhost ~]# docker exec -it fd70cac69589 /bin/bash

root@fd70cac69589:/app# cat /etc/issue

Debian GNU/Linux 9 \n \l