Load in-cluster config is KUBECONFIG is not set

README.md

@@ -58,9 +58,10 @@ For running the controller (runboat itself):
 
 - Python 3.10
 - `kubectl`
-- A `KUBECONFIG` that provides access to the namespace where the builds are deployed,
-  with permissions to create and delete Service, Job, Deployment, Ingress, Secret and
-  ConfigMap resources.
+- A `KUBECONFIG` or an in-cluster service account that provides access to the namespace
+  where the builds are deployed, with permissions to create and delete Service, Job,
+  Deployment, Ingress, Secret and ConfigMap resources as well as read and watch
+  Deployments and Jobs.
 - Some sort of reverse proxy to expose the REST API.
 
 The controller can be run outside the kubernetes cluster or deployed inside it, or even

src/runboat/k8s.py

@@ -1,5 +1,6 @@
 import asyncio
 import logging
+import os
 import shutil
 import subprocess
 import tempfile
@@ -31,7 +32,10 @@ def _split_image_name_tag(img: str) -> tuple[str, str]:
 
 @sync_to_async
 def load_kube_config() -> None:
+    if "KUBECONFIG" in os.environ:
         config.load_kube_config()
+    else:
+        config.load_incluster_config()
 
 
 @sync_to_async