update readme

2023-01-22 15:04:19 +03:00 · 2023-01-22 15:04:19 +03:00 · d82a8e78dd
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 * RABBITMQ_USER
 * RABBITMQ_PASSWORD
 * RABBITMQ_USE_SSL
+
+## docker-compose sample
+```
+version: "2"
+
+services:
+ barcode-scanner:
+   image: mxfox.ru/mxfox/barcode-scanner-client:latest
+   devices:
+    - "/dev/ttyACM0:/dev/ttyACM0"
+   environment:
+    - 'SCANNER_PORT=/dev/ttyACM0' 
+    - 'RABBITMQ_HOST=rabbitmq' 
+    - 'RABBITMQ_USER=user' 
+    - 'RABBITMQ_PASSWORD=pass' 
+    - 'RABBITMQ_USE_SSL=false' 
+    - 'RABBITMQ_VIRTUAL_HOST=/'
+```