docker-diff is a mini tool to quickly compare the contents of two Docker images.
$ ./docker-diff alpine:3.2 alpine:3.3
7,8c7
< ---s--x--x 9944 bin/bbsuid
< -rwxr-xr-x 800936 bin/busybox
---
> -rwxr-xr-x 809128 bin/busybox
63d61
< lrwxrwxrwx 0 bin/rc-status
82d79
< -rwxr-xr-x 9872 bin/uniso
92,94d88
< drwxr-xr-x 0 etc/acpi/
< drwxr-xr-x 0 etc/acpi/PWRF/
< -rwxr-xr-x 19 etc/acpi/PWRF/00000080
105,106c99,100
< -rw-r--r-- 45 etc/apk/repositories
< -rw-r--r-- 12 etc/apk/world
---
> -rw-r--r-- 95 etc/apk/repositories
> -rw-r--r-- 51 etc/apk/world
108,129d101
< -rw-r--r-- 328 etc/conf.d/bootmisc
< -rw-r--r-- 876 etc/conf.d/consolefont
< -rw-r--r-- 55 etc/conf.d/cron
< -rw-r--r-- 348 etc/conf.d/devfs
< -rw-r--r-- 117 etc/conf.d/dmesg
< -rw-r--r-- 1402 etc/conf.d/fsck
< -rw-r--r-- 59 etc/conf.d/hostname
< -rw-r--r-- 857 etc/conf.d/hwclock
< -rw-r--r-- 911 etc/conf.d/keymaps
[...]