trapping signal from "docker stop" in bash

user_2341555 0
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i have an entry point script in a docker container that looks something like the following:

#!/bin/bash

echo starting up

function shut_down() {
    echo shutting down

    pid=$(ps -e | grep myapp | awk '{print $1}')
    kill -SIGTERM $pid  
    exit
}

trap "shut_down" SIGKILL SIGTERM SIGHUP SIGINT EXIT

/opt/myapp

I can't figure out how to trap the signal sent in by running docker stop on the container. When running interactively, a ctrl+c will trigger it as expected, but a docker stop command just waits for the 10 second timeout, and exits without ever entering the shut_down function

How can I trap the signal sent by docker stop in bash to do some cleanup?

docker bash
3 Answers
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