Multi-Exec

docker-entrypoint.sh

#!/bin/bash

cmd_queue=();
push_queue() {
  cmd_queue+=("$@")
}
process_queue() {
  for cmd in "${cmd_queue[@]}"; do
    echo "Running command: $cmd"
    $cmd &
    pid=$!;
    echo "PID: $pid"
    pids+=($pid)
  done

  while : ; do
    for i in "${!pids[@]}"; do
      if ! kill -0 ${pids[i]} 2> /dev/null; then
        echo "Command ${cmd_queue[i]} exited. Killing other processes..."
        kill "${pids[@]:$i}" 2> /dev/null
        exit 1
      fi
    done
  done
}

# ur silly commands here
push_queue "crond -n"

if [ "$@" != "" ]; then
  push_queue "$@"
fi;

process_queue