feat: fix celery docker filer (#1413)

Author: earayu

scripts/start-celery-beat.sh

@@ -5,4 +5,4 @@ set -o nounset
 
 
 rm -f './celerybeat.pid'
-exec watchfiles celery.__main__.main --args '-A config.celery beat -l INFO'
+exec celery -A config.celery beat -l INFO

scripts/start-celery-flower.sh

@@ -3,6 +3,4 @@
 set -o errexit
 set -o nounset
 
-exec watchfiles celery.__main__.main \
-    --args \
-    "-A config.celery flower --basic_auth=\"${CELERY_FLOWER_USER}:${CELERY_FLOWER_PASSWORD}\""
+exec celery -A config.celery flower --basic_auth="${CELERY_FLOWER_USER}:${CELERY_FLOWER_PASSWORD}"