Unable to locate package while building Docker ima

问题:

During my Docker container build process, I attemptted to install a few packages using apt-get install. However the process failed to complete because the 3 of the 4 packages could not be found.

Step 1 : RUN apt-get update  && apt-get install -y netcat  ca-certificates  build-essential  libssl-dev
 ---> Running in 38d22d97ec4a
Err http://http.debian.net jessie InRelease

Err http://http.debian.net jessie-updates InRelease

Err http://security.debian.org jessie/updates InRelease

Err http://http.debian.net jessie Release.gpg
  Could not resolve 'http.debian.net'
Err http://security.debian.org jessie/updates Release.gpg
  Could not resolve 'security.debian.org'
Err http://http.debian.net jessie-updates Release.gpg
  Could not resolve 'http.debian.net'
Reading package lists...
W: Failed to fetch http://http.debian.net/debian/dists/jessie/InRelease

W: Failed to fetch http://http.debian.net/debian/dists/jessie-updates/InRelease 

W: Failed to fetch http://security.debian.org/dists/jessie/updates/InRelease

W: Failed to fetch http://http.debian.net/debian/dists/jessie/Release.gpg  Could not resolve 'http.debian.net'

W: Failed to fetch http://http.debian.net/debian/dists/jessie-updates/Release.gpg  Could not resolve 'http.debian.net'

W: Failed to fetch http://security.debian.org/dists/jessie/updates/Release.gpg  Could not resolve 'security.debian.org'

W: Some index files failed to download. They have been ignored, or old ones used instead.
Reading package lists...
Building dependency tree...
Reading state information...
E: Unable to locate package netcat
E: Unable to locate package build-essential
E: Unable to locate package libssl-dev
Removing intermediate container 38d22d97ec4a
2015/08/10 12:03:07 The command [/bin/sh -c apt-get update  && apt-get install -y netcat  ca-certificates  build-essential  libssl-dev] returned a non-zero code: 100

At first, I thought this was an issue with my base image, however I have no issues building the container on another VM. Thoughts?

回答1:

I found this answer in a newer question based on the same problem and it fixed the issue for me.

$ docker-machine restart default      # Restart the environment
$ eval $(docker-machine env default)  # Refresh your environment settings

Answer provided by Mark Smith.

回答2:

This issue revolved around the host's network configuration. The eth0 interface was improperly configured. The following commands helped me determine it was a DNS issue.

$ docker run --rm debian:jessie ping -c 5 google.com
ping: unknown host
$ docker run --rm debian:jessie ping -c 5 8.8.8.8
PING 8.8.8.8 (8.8.8.8): 56 data bytes
64 bytes from 8.8.8.8: icmp_seq=0 ttl=38 time=37.147 ms
64 bytes from 8.8.8.8: icmp_seq=1 ttl=38 time=32.917 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=38 time=31.475 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=38 time=30.692 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=38 time=31.180 ms
--- 8.8.8.8 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max/stddev = 30.692/32.682/37.147/2.352 ms