Shell init for docker container with signal handling

entrypoint.sh

# Uncomment to print commands being executed
# set -x  

pid=0
# SIGTERM-handler
term_handler() {
        echo "Handler INT";
        if [ $pid -ne 0 ]; then
        kill -SIGTERM "$pid"
        wait "$pid"
        fi
        exit 130;
}
# setup handlers
trap term_handler INT TERM

# Run app
java -jar server local.yml &

pid="$!"


while true
do
  sleep 1
done