From 5208af20101b18148754edac67e8e5ef3eb3d90b Mon Sep 17 00:00:00 2001
From: Joakim Olsson <joakim@unbound.se>
Date: Sun, 29 Mar 2026 10:00:48 +0200
Subject: [PATCH] fix: cap Node.js heap to prevent OOM during wgc composition

Set NODE_OPTIONS=--max-old-space-size=64 after wgc installation
to limit Node.js heap for runtime wgc invocations, preventing
container OOMKills in memory-constrained environments.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 Dockerfile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Dockerfile b/Dockerfile
index 71e02e2..e1e0551 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -30,6 +30,9 @@ ENV TZ Europe/Stockholm
 # Install wgc CLI globally for Cosmo Router composition
 RUN npm install -g wgc@latest
 
+# Cap Node.js heap for runtime wgc invocations to prevent OOM
+ENV NODE_OPTIONS="--max-old-space-size=64"
+
 # Copy timezone data and certificates
 COPY --from=build /usr/share/zoneinfo /usr/share/zoneinfo
 COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/