docker_start.sh

#!/bin/bash

# Start the first process
/usr/local/bin/gunicorn -D -p /var/tmp/cigarbox.pid --bind=0.0.0.0:9600 --chdir=/cigarbox --pythonpath=/cigarbox web:app --error-logfile=/cigarbox/error.log
status=$?
if [ $status -ne 0 ]; then
  echo "Failed to start gunicorn: $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 exits with an error
# if it detects that either of the processes has exited.
# Otherwise it loops forever, waking up every 60 seconds

while sleep 60; do
  ps aux |grep gunicorn |grep -q -v grep
  PROCESS_1_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  ]; then
    echo "One of the processes has already exited."
    exit 1
  fi
done