fix(test): use --network=host for Docker-in-Docker compatibility

tests/test.sh

@@ -37,12 +37,11 @@ assert_match() {
 }
 
 echo "Running container: $IMAGE"
-docker run -d --name "$CONTAINER_NAME" -p 0:8080 "$IMAGE" >/dev/null
+docker run -d --name "$CONTAINER_NAME" --network=host "$IMAGE" >/dev/null
 
-CONTAINER_IP=$(docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' "$CONTAINER_NAME")
-BASE_URL="http://${CONTAINER_IP}:8080"
+BASE_URL="http://localhost:8080"
 
-echo "Waiting for container (ip $CONTAINER_IP)..."
+echo "Waiting for container on localhost:8080..."
 for i in $(seq 1 30); do
   if curl -sf "$BASE_URL/" >/dev/null 2>&1; then
     echo "Container ready after ${i}s"