docker镜像下载包报错

Question

我正在尝试构建一个 docker 镜像(使用我的 Dockerfile)，但我收到一个关于下载目录空间不足的非常奇怪的错误:

Total download size: 208 k
Installed size: 760 k
Downloading packages:

Error downloading packages:
  libyaml-0.1.4-11.el7_0.x86_64: Insufficient space in download directory /var/cache/yum/x86_64/7/centos/packages
    * free   0 
    * needed 55 k
  PyYAML-3.10-11.el7.x86_64: Insufficient space in download directory /var/cache/yum/x86_64/7/centos/packages
    * free   0 
    * needed 153 k

The command '/bin/sh -c yum -y install python-yaml' returned a non-zero code: 1

我使用的是centos7基础镜像

$ df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            7.8G     0  7.8G   0% /dev
tmpfs           1.6G  106M  1.5G   7% /run
/dev/sda1       118G  112G     0 100% /
tmpfs           7.9G  648K  7.9G   1% /dev/shm
tmpfs           5.0M  4.0K  5.0M   1% /run/lock
tmpfs           7.9G     0  7.9G   0% /sys/fs/cgroup
/dev/sdb1        92G  206M   87G   1% /boot
tmpfs           1.6G   56K  1.6G   1% /run/user/1001

Answer 1

以下 docker 命令是为我修复底层错误的技巧:

$ docker rm $(docker ps -qa)