Add black command to Makefile

Author: cache-rules

Makefile

@@ -37,8 +37,6 @@ stop: cmd:= stop $(name)
 restart: cmd:= restart $(name)
 logs: cmd:= logs -f
 exec: cmd:= exec $(name) $(c)
+black: cmd:= exec nerd_herder black -l 100 .
 dcps: cmd:= ps
-build push up down start stop restart logs exec dcps: docker_compose
-
-black:
-	black -l 100 .
+build push up down start stop restart logs exec dcps black: docker_compose

requirements.txt

@@ -1,3 +1,4 @@
+black==18.6b2
 Django==2.0.1
 django-redis==4.9.0
 djangorestframework==3.7.7