#!/bin/bash# Start the first process ./my_first_process -Dstatus=$?if [ $status -ne 0 ]; then echo "Failed to start my_first_process: $status" exit $statusfi# Start the second process ./my_second_process -Dstatus=$?if [ $status -ne 0 ]; then echo "Failed to start my_second_process: $status" exit $statusfi# Naive check runs checks once a minute to see if either of the processes exited.# This illustrates part of the heavy lifting you need to do if you want to run# more than one service in a container. The container exits with an error# if it detects that either of the processes has exited.# Otherwise it loops forever, waking up every 60 secondswhile sleep 60; do ps aux |grep my_first_process |grep -q -v grep PROCESS_1_STATUS=$? ps aux |grep my_second_process |grep -q -v grep PROCESS_2_STATUS=$? # If the greps above find anything, they exit with 0 status # If they are not both 0, then something is wrong if [ $PROCESS_1_STATUS -ne 0 -o $PROCESS_2_STATUS -ne 0 ]; then echo "One of the processes has already exited." exit 1 fi done
https://docs.docker.com/config/containers/multi-service_container/