plug task enqueing properly

ctrl/docker-compose.yml

@@ -5,6 +5,8 @@ x-common-env: &common-env
   DEBUG: 1
   GRPC_HOST: grpc
   GRPC_PORT: 50051
+  MEDIA_IN: ${MEDIA_IN:-/app/media/in}
+  MEDIA_OUT: ${MEDIA_OUT:-/app/media/out}
 
 x-healthcheck-defaults: &healthcheck-defaults
   interval: 5s
@@ -119,7 +121,7 @@ services:
     build:
       context: ..
       dockerfile: ctrl/Dockerfile
-    command: celery -A mpr worker -l info -Q default -c 2
+    command: celery -A mpr worker -l info -Q transcode -c 2
     environment:
       <<: *common-env
       MPR_EXECUTOR: local