[ui] Set default API URL to '/'

Sets the default API base URL to 'http://localhost:8000' only
in development mode and '/' in every other case. The base
URL can be changed with the 'VITE_API_ENDPOINT' env variable.

Signed-off-by: Eva Millán <[email protected]>

Author: evamillan

ui/src/services/api/client.js

@@ -1,6 +1,7 @@
 import axios from 'axios'
 
-const base = import.meta.env.VITE_API_ENDPOINT || 'http://localhost:8000'
+const defaultBase = import.meta.env.MODE === 'development' ? 'http://localhost:8000' : "/"
+const base = import.meta.env.VITE_API_ENDPOINT || defaultBase
 
 export const client = axios.create({
   baseURL: base,