Docker Out of Memory: How to Diagnose and Fix OOM Kills

Docker containers can be silently killed by the Linux kernel's OOM killer when they exceed available memory, indicated by OOMKilled: true and exit code 137. The article explains how to diagnose OOM kills using docker inspect and dmesg, set memory limits via CLI or docker-compose, and find memory leaks inside containers. It also recommends setting memory limits in production, monitoring usage, and using restart policies as a temporary measure.