Update Docker configuration to change server port from 8000 to 8080 across Dockerfile and docker-compose files. Enhance CSS for improved dark theme contrast and readability with new color variables and styles.

docker-compose.yml

@@ -10,13 +10,13 @@ services:
       dockerfile: Dockerfile
     container_name: watcher-visio
     ports:
-      - "8000:8000"
+      - "8080:8080"
     environment:
       - PYTHONUNBUFFERED=1
       # Override via environment or env_file (e.g. env_file: .env):
       # PROMETHEUS_URL, OPENSTACK_CLOUD, OPENSTACK_REGION_NAME, SECRET_KEY
     healthcheck:
-      test: ["CMD", "curl", "-f", "http://127.0.0.1:8000/"]
+      test: ["CMD", "curl", "-f", "http://127.0.0.1:8080/"]
       interval: 30s
       timeout: 10s
       retries: 3