Bug: Added Sidekiq to production docker compose (#555) (#557)

* Sidekiq service was missing from the production docker compose file. Added it.

docker-compose.production.yaml

@@ -11,6 +11,7 @@ services:
         RAILS_ENV: 'production'
         RAILS_SERVE_STATIC_FILES: 'true'
     image: chatwoot:latest
+    env_file: .env ## Change this file for customized env variables
 
   rails:
     <<: *base
@@ -20,12 +21,22 @@ services:
       - redis
     ports:
       - 3000:3000
-    env_file: .env ## Change this file for customized env variables
     environment:
       - NODE_ENV=production
       - RAILS_ENV=production
     entrypoint: docker/entrypoints/rails.sh
-    command: ["bundle", "exec", "rails", "s", "-p", "3000", "-b", "0.0.0.0"]
+    command: ['bundle', 'exec', 'rails', 's', '-p', '3000', '-b', '0.0.0.0']
+
+  sidekiq:
+    <<: *base
+    image: chatwoot:latest
+    depends_on:
+      - postgres
+      - redis
+    environment:
+      - NODE_ENV=production
+      - RAILS_ENV=production
+    command: ['bundle', 'exec', 'sidekiq', '-C', 'config/sidekiq.yml']
 
   postgres:
     image: postgres:11.6