CV2-5020 - update pender and pender-background docker-compose (#101)

Because of the work we did to consolidate Dockerfiles in Pender, there were some changes we need to do here if we want to run Pender from the Check repo.

References: CV2-5020
Relates to: meedan/pender#462

Author: vasconsaurus

docker-compose.yml

@@ -133,26 +133,29 @@ services:
       - "3200:3200"
       - "9555:9555"
     volumes:
-      - "./pender:/app"
+      - "./pender:/app/pender"
     depends_on:
       - postgres
       - redis
       - minio
     environment:
+      APP: pender
+      DEPLOY_ENV: local
       RAILS_ENV: development
       SERVER_PORT: 3200
     networks:
       - dev
   pender-background:
     build: pender
     platform: linux/x86_64
-    command: /app/docker-background.sh
     shm_size: 1G
     volumes:
-      - "./pender:/app"
+      - "./pender:/app/pender"
     depends_on:
       - pender
     environment:
+      APP: pender-background
+      DEPLOY_ENV: local
       RAILS_ENV: development
       SERVER_PORT: 3200
     networks: