set mem and cpu in compose file

Author: robertcuadra

README.md

@@ -2,7 +2,8 @@
 
 ### Freebird specific
 * Elasticsearch ONLY
-* This app has cpu and memory requirements: `convox scale elasticsearch --memory=2048 --cpu=2048`
+* This app has cpu and memory requirements which are set in `docker-compose.yml`
+* This app requires an update to the host system's `vm.max_map_count`. If it's not already set, `convox rack params set 'InstanceBootCommand="sysctl -w vm.max_map_count=262144"'``
 
 ---
 

docker-compose.yml

@@ -2,6 +2,8 @@ version: 2
 services:
   elasticsearch:
     build: .
+    cpu_shares: 2048
+    mem_limit: 2048MB
     ports:
       - 9200
     volumes: