Tracking / Label creation does not work: Network Error

[MarcoWel]

Describe the bug Tracking / Label creation does not work. Dashboard tries to call invalid API URLs.

To Reproduce Steps to reproduce the behavior:

1. Set up a fresh karrio instance:

   git clone --depth 1 https://github.com/karrioapi/karrio
   cd karrio/docker
   sudo docker-compose up

2. Log into the dashboard.
3. Setup carrier.
4. Try tracking or creating label.
5. "Network error" is shown, or browser network inspector shows API error.

Desktop (please complete the following information):

• OS: Ubuntu 22.04
• Browser: Chrome, Firefox
• Version: karrio 2023.1.6

Additional context

docker-compose.yml > dashboard > environment: KARRIO_URL: http://api:${KARRIO_HTTP_PORT:-5002} (default)

docker-compose.yml > dashboard > environment: KARRIO_URL: ${KARRIO_PUBLIC_URL}