Merge branch '233_stop_on_docker_run_errors' into 238_check_docker_version_when_using_dns
check for Docker version >= 1.2.0 when using "--with-dns"
since --dns-search=. is is new in that version
Merge branch '233_stop_on_docker_run_errors' into 238_check_docker_version_when_using_dns
Merge pull request #245 from rade/238_check_docker_version_when_using_dns

Looks good to me.  Fixes #238