found chmod 777 in runner, please fix!

chmod_in_runner

When investigating a problem i found the following code in gitlab runner:

#!/bin/sh

set -x
for path in $@; do
        chmod 777 "$path"
done

Just for the reference: there is no need to do a dangerous chmod 777 anywhere in the code or ever advice a user to do so. This leads subsequently to runner takeovers. I personally have to admit that I used chmod 777 missconfigurations on several penetration tests.

Please do a "grep -R 777" on your source code and see if this is messed up somewhere else.

Proposal

#4187 (comment 165595984)