Add docker-compose.yml example

docker-compose.yml.example

@@ -0,0 +1,47 @@
+# See docs.getsentry.com/on-premise/server for instructions
+
+version: '2'
+services:
+  base:
+    build: .
+    environment:
+      # Run `docker-compose run web config generate-secret-key`
+      # to get the SENTRY_SECRE_KEY value.
+      # - SENTRY_SECRET_KEY=
+      - SENTRY_MEMCACHED_HOST=memcached
+      - SENTRY_REDIS_HOST=redis
+      - SENTRY_POSTGRES_HOST=postgres
+
+  memcached:
+    image: memcached:1.4
+
+  redis:
+    image: redis:3.0-alpine
+
+  postgres:
+    image: postgres:9.5
+
+  web:
+    extends: base
+    links:
+      - redis
+      - postgres
+      - memcached
+    ports:
+      - '9000:9000'
+
+  cron:
+    extends: base
+    command: celery beat
+    links:
+      - redis
+      - postgres
+      - memcached
+
+  worker:
+    extends: base
+    command: celery worker
+    links:
+      - redis
+      - postgres
+      - memcached