lamine.cloud ยท Notes from production https://lamine.cloud/blog/ Incidents, AWS, containers, delivery. By Mouhamadou Lamine Gueye, DevOps / Platform / SRE. en Optimising a Docker image with a real Dockerfile: stages, why not Alpine, and the traps https://lamine.cloud/blog/docker-image-pitfalls.html https://lamine.cloud/blog/docker-image-pitfalls.html Tue, 25 Aug 2026 08:00:00 +0000 A 289-line production Dockerfile for a Node.js API with Chrome and native modules, read line by line: what multi-stage builds really buy, why the runtime is Debian slim and not Alpine, 84 build arguments that bake secrets into the image, a chown that doubles the size, and the rewrite. It was not the infrastructure: metrics, deliverables and the perimeter of a DevOps mission https://lamine.cloud/blog/metrics-in-deliverables.html https://lamine.cloud/blog/metrics-in-deliverables.html Tue, 25 Aug 2026 08:00:00 +0000 A platform kept dropping requests after the scaling work was done. Load balancer logs showed a synchronous OCR job, not the infrastructure. Why metrics belong inside the deliverable, why the perimeter must be written down, and the three levels at which a system gets optimised. How this site is deployed: S3, CloudFront, OpenTofu and GitHub Actions https://lamine.cloud/blog/how-this-site-is-deployed.html https://lamine.cloud/blog/how-this-site-is-deployed.html Sun, 23 Aug 2026 08:00:00 +0000 The page you are reading is served by the stack it describes: a private S3 bucket behind CloudFront with OAC, DNS and certificates converging in one apply, a serverless contact form, and a deploy that is just a git push. Total bill: about $2.50 a month. Deploying on AWS ECS, and what you gain over plain EC2 https://lamine.cloud/blog/ecs-vs-ec2.html https://lamine.cloud/blog/ecs-vs-ec2.html Sun, 23 Aug 2026 08:00:00 +0000 A hands-on walkthrough of a real Fargate deployment: image, task definition, service behind an ALB. Then an honest comparison with self-managed EC2: what you stop operating, what it costs, and the cases where a plain instance still wins. The health check that took down production https://lamine.cloud/blog/health-check-outage.html https://lamine.cloud/blog/health-check-outage.html Sat, 22 Aug 2026 08:00:00 +0000 A search cluster died and five production services went with it, none of which needed search to serve a page. A post-mortem, minute by minute: a non-vital dependency inside a liveness probe, and a watchdog I had shipped two days earlier with no blast radius.