From 9a32cdb1b33af788c3242200b685243cceb23672 Mon Sep 17 00:00:00 2001
From: Joakim Olsson <joakim@unbound.se>
Date: Sun, 29 Mar 2026 09:31:53 +0000
Subject: [PATCH] fix: cap Node.js heap to prevent OOM during wgc composition
 (#788)
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## Summary
- Sets `NODE_OPTIONS=--max-old-space-size=64` in Dockerfile to cap Node.js heap when running `wgc router compose`
- Prevents container OOMKills in memory-constrained environments (e.g. acctest with 128Mi limit)
- The wgc Node.js process was using unbounded heap, which combined with the Go service easily exceeded container memory limits during rapid schema publishing

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Reviewed-on: https://gitea.unbound.se/unboundsoftware/schemas/pulls/788
---
 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/