diff --git a/Dockerfile b/Dockerfile
index a495233b..2a42dcdc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -43,6 +43,11 @@ CMD ["pnpm", "dev:local"]
 FROM base AS builder
 # Limit memory to 1GB to prevent ResourceExhausted in combination with worker limits
 ENV NODE_OPTIONS="--max-old-space-size=1024"
+
+# Force Turbopack (Rust/Rayon) and Node.js to use strictly 1 thread to avoid starving the Gitea Runner VPS CPU
+ENV RAYON_NUM_THREADS=1
+ENV UV_THREADPOOL_SIZE=1
+
 RUN pnpm build
 
 # Stage 3: Runner