Change HTTP port from 8080 to 7860

Update the exposed HTTP port and application config to use port 7860 instead of 8080. Modified Dockerfile EXPOSE and HTTP_PORT in csv_opcua_server.py so the container and server configuration are consistent.

Dockerfile

@@ -20,7 +20,7 @@ COPY . .
 
 # Expose ports
 EXPOSE 4840
-EXPOSE 8080
+EXPOSE 7860
 
 # Run the app
 CMD ["python", "csv_opcua_server.py"]

csv_opcua_server.py

@@ -11,7 +11,7 @@ from asyncua import Server, ua
 # =========================
 BIND_IP = "0.0.0.0"
 OPCUA_PORT = 4840
-HTTP_PORT = 8080
+HTTP_PORT = 7860
 CSV_FILE = "data.csv"
 ROW_INTERVAL = 2  # seconds