updates docker-compose format to version 2 #483

{{cookiecutter.repo_name}}/dev.yml

@@ -1,14 +1,19 @@
-postgres:
+version: '2'
+services:
+  postgres:
     image: postgres:9.5
     volumes:
       # If you are using boot2docker, postgres data has to live in the VM for now until #581 is fixed
       # for more info see here: https://github.com/boot2docker/boot2docker/issues/581
       - /data/dev/{{cookiecutter.repo_name}}/postgres:/var/lib/postgresql/data
 
-django:
+  django:
+    build:
+      context: .
       dockerfile: Dockerfile-dev
-  build: .
     command: python /app/manage.py runserver_plus 0.0.0.0:8000
+    depends_on:
+      - postgres
     volumes:
       - .:/app
     ports:

{{cookiecutter.repo_name}}/docker-compose.yml

@@ -1,43 +1,57 @@
-postgres:
+version: '2'
+services:
+  postgres:
     image: postgres:9.5
     volumes:
       - /data/{{cookiecutter.repo_name}}/postgres:/var/lib/postgresql/data
     env_file: .env
 
-django:
-  build: .
+  django:
+    build:
+      context: .
     user: django
     links:
       - postgres
       - redis
     command: /gunicorn.sh
     env_file: .env
+    depends_on:
+      - postgres
+      - redis
 
-nginx:
+  nginx:
     build: ./compose/nginx
     links:
       - django
     ports:
       - "0.0.0.0:80:80"
 
-redis:
+  redis:
     image: redis:3.0
-{% if cookiecutter.use_celery == 'y' %}
-celeryworker:
-  build: .
+  {% if cookiecutter.use_celery == 'y' %}
+  celeryworker:
+    build:
+      context: .
     user: django
     env_file: .env
     links:
      - postgres
      - redis
     command: celery -A {{cookiecutter.repo_name}}.taskapp worker -l INFO
+    depends_on:
+      - postgres
+      - redis
 
-celerybeat:
-  build: .
+  celerybeat:
+    build:
+      context: .
     user: django
     env_file: .env
     links:
       - postgres
       - redis
     command: celery -A {{cookiecutter.repo_name}}.taskapp beat -l INFO
-{% endif %}
+    depends_on:
+      - postgres
+      - redis
+  {% endif %}