Fix the build arguments in the Dockerfile
Fix the build arguments in the Dockerfile

We need to support the prefixed `EXPEDITOR_` build arguments in our
Dockerfile. We are leaving the non-prefixed arguments in there for
back-compat.

Signed-off-by: Tom Duffield <96835dd8bfa718bd6447ccc87af89ae1675daeca@chef.io>

mwrock/chef,higanworks/chef,tas50/chef-1,mwrock/chef,nvwls/chef,tas50/chef-1,tas50/chef-1,higanworks/chef,mattray/chef,gene1wood/chef,nvwls/chef,higanworks/chef,MsysTechnologiesllc/chef,chef/chef,higanworks/chef,mwrock/chef,mattray/chef,chef/chef,MsysTechnologiesllc/chef,higanworks/chef,gene1wood/chef,nvwls/chef,tas50/chef-1,nvwls/chef,jaymzh/chef,mwrock/chef,MsysTechnologiesllc/chef,jaymzh/chef,jaymzh/chef,nvwls/chef,gene1wood/chef,gene1wood/chef,mattray/chef,nvwls/chef,mattray/chef,chef/chef,MsysTechnologiesllc/chef,jaymzh/chef,mattray/chef,chef/chef