Critical file are aoverriden by dockerized-phantomjs.tar.gz

[bigfoot90]

I'm trying to use your dockerized-phantomjs.tar.gz in my customized alpine-linux based image.

I've noticed that the file contains other files in addition to these that are required to run phantomjs.

In particular these files are overrindden when I try to extract it:

/bin/sh
/etc/passwd
/etc/group
/usr/bin/curl

Shouldn't this file be put in the Dockerfile instead? Thanks.