Docker container exit code — how to use them for troubleshooting?
It’s one of the most common question that I come across: “Why is my container not running?”
Can docker container exit codes help troubleshoot this issue?
The first step in answering this question is to identify the exit code for the docker container. The exit code may give a hint as to what happened to stop the container running. This article lists the most common exit codes when working with docker containers and aims to answer two important questions:
What does this specific exit code mean?
What action caused this exit code?
This will ultimately help answer the original question: “Why is my container not running?”
How to Find Exit Codes
Option 1: List all containers that exited
docker ps --filter "status=exited"
Option 2: Grep by container name
docker ps -a grep <container-name>Example: docker ps -a | grep hello-world
