Differences between ls -al at the end of the build and when running the image in a container

end-of-build

tep 17 : RUN whoami 
---> Running in 3240a56670c9 
restx 
---> f80416f3ec29 
Error removing intermediate container 7ec7bc8a9760: The given container is <nil> 
Removing intermediate container 3240a56670c9 
Step 18 : RUN ls -al ${HOME} 
---> Running in efd468ae1f51 
total 12
drwxr-xr-x 1 restx restx   76 Jun 18 06:56 .
drwxr-xr-x 1 root  root   182 Jun 18 06:56 ..
-rw-r--r-- 1 restx restx  220 Apr 16 21:23 .bash_logout
-rw-r--r-- 1 restx restx 3392 Apr 16 21:23 .bashrc
drwxr-xr-x 1 restx restx   10 Jun 18 06:56 .ivy2
-rw-r--r-- 1 restx restx  675 Apr 16 21:23 .profile
drwxr-xr-x 1 restx restx  138 Jun 18 06:56 .restx 
---> f71504f3d4a5 

from-image

$ docker run --rm -t -i ggtools/restx-docker:exp ls -al /var
/lib/restx
total 28
drwxr-xr-x  9 root  root  4096 Jun 18 07:04 .
drwxr-xr-x 26 root  root  4096 Jun 18 07:04 ..
-rw-r--r--  1 restx restx  220 Apr 16 21:23 .bash_logout
-rw-r--r--  1 restx restx 3392 Apr 16 21:23 .bashrc
drwxr-xr-x  5 root  root  4096 Jun 18 07:04 .ivy2
-rw-r--r--  1 restx restx  675 Apr 16 21:23 .profile
drwxr-xr-x  7 root  root  4096 Jun 18 07:04 .restx