#!/bin/bash cd backend # Start the first process node app.js & status=$? if [ $status -ne 0 ]; then echo "Failed to start my_first_process: $status" exit $status fi # Start the second process apachectl -DFOREGROUND status=$? if [ $status -ne 0 ]; then echo "Failed to start my_second_process: $status" exit $status fi # Naive check runs checks once a minute to see if either of the processes exited. # This illustrates part of the heavy lifting you need to do if you want to run # more than one service in a container. The container will exit with an error # if it detects that either of the processes has exited. # Otherwise it will loop forever, waking up every 60 seconds while /bin/true; do ps aux |grep node\ app.js # |grep -q -v grep PROCESS_1_STATUS=$? ps aux |grep apache2 # |grep -q -v grep PROCESS_2_STATUS=$? # If the greps above find anything, they will 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 sleep 60 done