curl --request GET \
  --url https://app.coolify.io/api/v1/applications/{uuid}/envs \
  --header 'Authorization: Bearer <token>'

[
  {
    "id": 123,
    "uuid": "<string>",
    "application_id": 123,
    "service_id": 123,
    "database_id": 123,
    "is_build_time": true,
    "is_literal": true,
    "is_multiline": true,
    "is_preview": true,
    "is_shared": true,
    "is_shown_once": true,
    "key": "<string>",
    "value": "<string>",
    "real_value": "<string>",
    "version": "<string>",
    "created_at": "<string>",
    "updated_at": "<string>"
  }
]