engine: resources: Fix backwards docker ports

This wasn't setup properly, now it's fixed. Woops.

examples/lang/docker0.mcl

@@ -2,7 +2,7 @@ docker:container "mgmt-nginx" {
 	state => "running",
 	image => "nginx",
 	cmd => ["nginx", "-g", "daemon off;",],
-	ports => {"tcp" => {80 => 8080,},},
+	ports => {"tcp" => {8080 => 80,},},
 }
 
 docker:image "nginx" {

examples/lang/docker_container0.mcl

@@ -2,5 +2,5 @@ docker:container "mgmt-nginx" {
 	state => "running",
 	image => "nginx",
 	cmd => ["nginx", "-g", "daemon off;",],
-	ports => {"tcp" => {80 => 8080,},},
+	ports => {"tcp" => {8080 => 80,},},
 }