KDOC 185: コンテナの中身をホストマシンにダンプして理解する

mkdir -p bundle/rootfs
docker pull centos:8
docker run --rm --name tmp -d centos:8 sleep
docker export tmp | tar -xC bundle/rootfs
ls -al bundle/rootfs/

total 116
drwxrwxr-x 17 orange orange  4096 Jun  5 21:01 .
drwxrwxr-x  3 orange orange  4096 Jun  5 21:01 ..
lrwxrwxrwx  1 orange orange     7 Nov  4  2020 bin -> usr/bin
drwxr-xr-x  4 orange orange  4096 Jun  5 20:55 dev
-rwxr-xr-x  1 orange orange     0 Jun  5 20:55 .dockerenv
drwxr-xr-x 55 orange orange 24576 Jun  5 20:55 etc
drwxr-xr-x  2 orange orange  4096 Nov  4  2020 home
lrwxrwxrwx  1 orange orange     7 Nov  4  2020 lib -> usr/lib
lrwxrwxrwx  1 orange orange     9 Nov  4  2020 lib64 -> usr/lib64
drwx------  2 orange orange  4096 Sep 15  2021 lost+found
drwxr-xr-x  2 orange orange  4096 Nov  4  2020 media
drwxr-xr-x  2 orange orange  4096 Nov  4  2020 mnt
drwxr-xr-x  2 orange orange  4096 Nov  4  2020 opt
drwxr-xr-x  2 orange orange  4096 Sep 15  2021 proc
dr-xr-x---  2 orange orange  4096 Sep 15  2021 root
drwxr-xr-x 11 orange orange  4096 Sep 15  2021 run
lrwxrwxrwx  1 orange orange     8 Nov  4  2020 sbin -> usr/sbin
drwxr-xr-x  2 orange orange  4096 Nov  4  2020 srv
drwxr-xr-x  2 orange orange  4096 Sep 15  2021 sys
drwxrwxr-x  7 orange orange  4096 Sep 15  2021 tmp
drwxr-xr-x 12 orange orange  4096 Sep 15  2021 usr
drwxr-xr-x 20 orange orange  4096 Sep 15  2021 var

docker stop tmp