diff --git a/dokku b/dokku
index 962c1f95e..235c5b7f1 100755
--- a/dokku
+++ b/dokku
@@ -101,13 +101,13 @@ case "$1" in
           START_CMD=$(dokku config:get $APP DOKKU_DOCKERFILE_START_CMD || $START_CMD)
         fi
 
+        [[ "$PROC_TYPE" == "web" ]] && port=${DOKKU_DOCKERFILE_PORT:=5000}
         if [[ "$BIND_EXTERNAL" = "false" ]] && [[ "$PROC_TYPE" == "web" ]];then
-          port=${DOKKU_DOCKERFILE_PORT:=5000}
           id=$(docker run -d -e PORT=$port $DOCKER_ARGS $IMAGE $START_CMD)
           ipaddr=$(docker inspect --format '{{ .NetworkSettings.IPAddress }}' $id)
         elif [[ "$BIND_EXTERNAL" = "true" ]] && [[ "$PROC_TYPE" == "web" ]];then
-          id=$(docker run -d -p 5000 -e PORT=5000 $DOCKER_ARGS $IMAGE $START_CMD)
-          port=$(docker port $id 5000 | sed 's/[0-9.]*://')
+          id=$(docker run -d -p $port -e PORT=$port $DOCKER_ARGS $IMAGE $START_CMD)
+          port=$(docker port $id $port | sed 's/[0-9.]*://')
           ipaddr=127.0.0.1
         elif [[ "$PROC_TYPE" != "web" ]];then
           id=$(docker run -d $DOCKER_ARGS $IMAGE $START_CMD)