dependency updates, dynamic port setting in Docker db

Author: chriscarrollsmith

docker-compose.yml

@@ -6,7 +6,7 @@ services:
       POSTGRES_PASSWORD: ${DB_PASSWORD}
       POSTGRES_DB: ${DB_NAME}
     ports:
-      - "5432:5432"
+      - "${DB_PORT}:5432"
     volumes:
       - postgres_data:/var/lib/postgresql/data