Fixes active record 7 compatibility

docker-compose.yml

@@ -4,7 +4,7 @@ services:
     restart: unless-stopped
     image: mysql:8.3
     volumes:
-      - /home/pcog/smartmeter/data:/var/lib/mysql
+      - $PWD/data:/var/lib/mysql
     ports:
       - 3306:3306
     environment:
@@ -15,8 +15,8 @@ services:
     restart: unless-stopped
     build: .
     command: 'ruby ./smartmeter.rb'
-    devices:
-      - "/dev/ttyUSB1:/dev/ttyUSB0"
+    #devices:
+    #  - "/dev/ttyUSB1:/dev/ttyUSB0"
     volumes:
       - .:/usr/src/app
     depends_on: