ryanuber · January 12, 2021 21:54
diff --git a/Dockerfile b/Dockerfile
 FROM ubuntu:20.04

 COPY sig.sh /sig.sh
 RUN chmod +x /sig.sh

 STOPSIGNAL SIGINT

 ENTRYPOINT ["/sig.sh"]
diff --git a/sig.sh b/sig.sh
 #!/bin/bash

 trap "register" INT

 register() {
    echo "INT"
    [ -z "$SIG" ] && SIG=1 || exit
 }

 while true; do
    sleep 100 &
    wait
 done