From 04fd4b646ed56f77684d21749d9ab6614ab4b8d7 Mon Sep 17 00:00:00 2001
From: stecklars <stecklars@noreply.gitea.com>
Date: Fri, 13 Feb 2026 14:38:02 +0000
Subject: [PATCH] examples: improve DIND rootless network performance

Use slirp4netns instead of vpnkit in DIND for significantly better network throughput
---
 examples/docker-compose/README.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/examples/docker-compose/README.md b/examples/docker-compose/README.md
index f372d3b7..76ffd0fb 100644
--- a/examples/docker-compose/README.md
+++ b/examples/docker-compose/README.md
@@ -53,6 +53,9 @@
     environment:
       - GITEA_INSTANCE_URL=<instance url>
       - DOCKER_HOST=unix:///var/run/user/1000/docker.sock
+      # Use slirp4netns instead of vpnkit for significantly better network throughput.
+      - DOCKERD_ROOTLESS_ROOTLESSKIT_NET=slirp4netns
+      - DOCKERD_ROOTLESS_ROOTLESSKIT_MTU=65520
       # When using Docker Secrets, it's also possible to use
       # GITEA_RUNNER_REGISTRATION_TOKEN_FILE to pass the location.
       # The env var takes precedence.