diff --git a/docker-compose.yaml b/docker-compose.yaml
index 7f4e8be..5a3b498 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -65,10 +65,12 @@ services:
       - /var/run/docker.sock:/var/run/docker.sock
     environment:
       DRONE_RPC_PROTO: http
-      DRONE_RPC_HOST: drone-server:80   # matches service name + port inside Docker network
+      DRONE_RPC_HOST: drone-server
       DRONE_RPC_SECRET: supersecretkey
       DRONE_RUNNER_CAPACITY: 2
       DRONE_RUNNER_NAME: runner1
+      DRONE_RUNNER_OS: linux
+      DRONE_RUNNER_ARCH: arm64
 
   registry:
     image: registry:2