feat(docker): add async port change and docker compose reload for services

- Introduce async `change_port` to update service port and reload docker compose
- Add `run_docker_command` for running docker compose commands asynchronously
- Implement `_get_random_port` utility for selecting available ports
- Refactor service discovery and port change logic to use new async methods
- Update proxy and manager logic to support new port change workflow

app/repositories/proxy.py

@@ -8,7 +8,6 @@ from pymongo import ReturnDocument
 from core.mongodb import get_database
 from models.proxy import ProxyDocument, ProxyUpdateInput
 from models.service import ServiceEndpointDocument
-from services.mitmproxy.models import ServiceConfig
 
 COLLECTION_NAME = "proxies"
 
@@ -38,16 +37,25 @@ async def ensure_proxy_indexes() -> None:
 async def create_proxy(
     proxy_port: int,
     name: str,
-    service: ServiceConfig,
+        upstream_port: int,
     code: str,
 ) -> ProxyDocument:
+    """
+    Saves a Proxy to the database.
+
+    :param proxy_port: the port the proxy is listening on
+    :param name: the name of the service
+    :param upstream_port: the upstream port the proxy is forwarding to
+    :param code: the code of the service
+    :return:
+    """
     now = _utcnow()
     proxy = ProxyDocument(
         proxy_port=proxy_port,
         name=name,
         code=code,
         service=ServiceEndpointDocument(
-            port=service["port"],
+            port=upstream_port,
         ),
         created_at=now,
         updated_at=now,