Docker映像Ubuntu 14.04未連接互聯網

Question

我已經使用dockerfile在鏡像docker上安裝了ubuntu 14:04

在我的dockerfile中，需要在ubuntu中更新和安裝應用程序

在dockerfile上，我填充如下語法

# get Ubuntu 14.04 images
FROM ubuntu:14.04

# copy file on local to images
COPY erp-enterprise_revisi.tar.gz /home/

# Update repository
RUN apt-get update

# Install mc on Ubuntu 14.04
RUN apt-get install mc

但是這個錯誤

Sending build context to Docker daemon 1.236 GB
Step 1 : FROM ubuntu:14.04
 ---> e9ae3c220b23
Step 2 : COPY erp-enterprise_revisi.tar.gz /home/
 ---> d94e66b9d23f
Removing intermediate container babeb959ae8e
Step 3 : RUN apt-get update
 ---> Running in ac702e7d10f4
Err http://archive.ubuntu.com trusty InRelease
Err http://archive.ubuntu.com trusty-updates InRelease
Err http://archive.ubuntu.com trusty-security InRelease
Err http://archive.ubuntu.com trusty Release.gpg
  Could not resolve 'archive.ubuntu.com'
Err http://archive.ubuntu.com trusty-updates Release.gpg
  Could not resolve 'archive.ubuntu.com'
Err http://archive.ubuntu.com trusty-security Release.gpg
  Could not resolve 'archive.ubuntu.com'
Reading package lists...
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty/InRelease  
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty-updates/InRelease  
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty-security/InRelease  
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty/Release.gpg  Could not resolve 'archive.ubuntu.com'
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty-updates/Release.gpg  Could not resolve 'archive.ubuntu.com'
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty-security/Release.gpg  Could not resolve 'archive.ubuntu.com'
W: Some index files failed to download. They have been ignored, or old ones used instead.
 ---> 2093977bf1d3
Removing intermediate container ac702e7d10f4
Step 4 : RUN apt-get install mc
 ---> Running in c38aa81084f4
Reading package lists...
Building dependency tree...
Reading state information...
E: Unable to locate package mc
The command '/bin/sh -c apt-get install mc' returned a non-zero code: 100

如何連接到互聯網？

Answer 1

在第3層環境中RUN apt-get update （ RUN apt-get update ）時，會出現一些網絡錯誤。

當僅在第4層上編輯Dockerfile時，docker docker build使用了緩存的層，而第1層至第3層則不再構建。

您需要使用-no-cache重新構建

因此，請嘗試以下操作：

$ cat Dockerfile

# get Ubuntu 14.04 images
FROM ubuntu:14.04

# copy file on local to images
#COPY erp-enterprise_revisi.tar.gz /home/

# Update repository
RUN apt-get update

# Install mc on Ubuntu 14.04
RUN apt-get install -y mc         <== Here you need give -y to force the install

$ docker build -no-cache -t test .

請參閱： 編寫Dockerfile的最佳實踐-構建緩存

Answer 2

剛剛找到這篇文章，所以您應該在安裝mc之前更改存儲庫， http：//slick.pl/kb/linux/installing-midnight-commander-4-8-11-ubuntu-14-04-13-10-13 -04-12-04 /

在您的DockerFile中，將RUN apt-get install mc替換為RUN apt-get -y install mc ，強制回答yes以避免非零代碼錯誤

Answer 3

並不是說它可能適用於這種特殊情況，... ;-)

...但是您會遇到類似的症狀（例如，容器無法連接到外部環境-例如，解析dns名稱，導致出現諸如“無法解析'archive.ubuntu.com'“ ），而docker守護進程未啟用沒有使用/應用所需的防火牆規則。 例如，使用選項'--iptables = false'或類似選項啟動時。

始終值得從容器內部運行ping xxxx（類似於google dns 8.8.8.8）以查看是否可以訪問。 如果它不是從容器內部而是從Docker主機運行，則可能存在防火牆設置問題