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fix(self-improving-mastra): bind app to 0.0.0.0 so Fargate health check passes #654

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Merged
lionello merged 1 commit into from
Jul 22, 2026
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fix(self-improving-mastra): bind app to 0.0.0.0 so Fargate health check passes #654

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6 changes: 5 additions & 1 deletion samples/self-improving-mastra/todo-app/Dockerfile
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Expand Up @@ -27,4 +27,8 @@ COPY --from=builder --chown=nextjs:nodejs /app/lib/schema.sql ./lib/schema.sql
USER nextjs
EXPOSE 3000

CMD ["node", "server.js"]
# Docker/Fargate inject HOSTNAME=<container hostname> at runtime, overriding the
# ENV above. Next's standalone server binds to $HOSTNAME, so it would listen only
# on the task's ENI IP and the `curl localhost` container health check would fail.
# Re-force 0.0.0.0, then `exec` so node stays PID 1 and receives SIGTERM directly.
CMD ["sh", "-c", "HOSTNAME=0.0.0.0 exec node server.js"]
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