Docker config update

docker-compose.yml

@@ -2,14 +2,18 @@ version: '3'
 services:
   db:
     container_name: smartmeter_db
+    restart: unless-stopped
     image: mysql 
     environment:
       MYSQL_ROOT_PASSWORD: rootme
       MYSQL_DATABASE: smartmeter
   smartmeter:
     container_name: smartmeter
+    restart: unless-stopped
     build: .
     command: 'ruby ./smartmeter.rb'
+    devices:
+      - "/dev/ttyUSB0:/dev/ttyUSB0"
     volumes:
       - .:/usr/src/app
     depends_on: