Setting hostname for a container does not work.

[carguel]

chef-provisionning-docker version : 0.10.0
Docker Engine Version : 1.12

Example:

with_machine_options(
  :docker_options => {
    :hostname => "myhostname"
  }
)

machine "mycontainer" do
  role "myrole"
end

When executing this, the hostname of the container is not changed to 'myhostname'.

It seems that Docker API recently changes.
The API option key to set the container hostname is now Hostname and no longer HostConfig/Hostname.
Modifying this in chef/provisioning/docker_driver/docker_run_options.rb, fixes the issue.