import requests

url = "https://api.13-215-85-171.sslip.io/v1/templates/builds/{build_id}/promote"

payload = {
    "tag": "<string>",
    "tags": ["<string>"]
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

{
  "id": "<string>",
  "name": "<string>",
  "description": "<string>",
  "builtin": true,
  "canonical_ref": "<string>",
  "namespace_slug": "<string>",
  "tags": [
    "<string>"
  ],
  "default_tag": "<string>",
  "runtime_defaults": {
    "default_env_keys": [
      "<string>"
    ],
    "start_cmd": "<string>",
    "default_user": "<string>",
    "default_workdir": "<string>",
    "readiness": {
      "kind": "tcp",
      "port": 3000,
      "timeout_secs": 30,
      "interval_ms": 500,
      "startup_grace_secs": 2
    }
  }
}