Changed docker to use a hosts file with various var files and to use roles.

docker/vars/chd.yml

@@ -3,3 +3,4 @@ http_host: "knox.greatbear.in"
 http_conf: "knox.greatbear.in.conf"
 host_port: "8337"
 host_directory: "barker-chd"
+env_file: "files/.env-chd"

docker/vars/mhl.yml

@@ -3,3 +3,4 @@ http_host: "knox.hngmohali.com"
 http_conf: "knox.hngmohali.com.conf"
 host_port: "8336"
 host_directory: "barker-mhl"
+env_file: "files/.env-mhl"

docker/vars/pkl.yml

@@ -3,3 +3,4 @@ http_host: "knox.hopsngrains.com"
 http_conf: "knox.hopsngrains.com.conf"
 host_port: "8338"
 host_directory: "barker-pkl"
+env_file: "files/.env-pkl"