Make tiangolo/uwsgi-nginx crash on python app failure

uwsgi-nginx: Dockerfile

FROM tiangolo/uwsgi-nginx:python3.7
# or FROM tiangolo/uwsgi-nginx-flask:python3.7

COPY supervisord.conf /etc/supervisor/conf.d/supervisord.conf
COPY stop-supervisor.sh /etc/supervisor/stop-supervisor.sh
RUN chmod +x /etc/supervisor/stop-supervisor.sh

uwsgi-nginx: stop-supervisor.sh

#!/bin/bash

printf "READY\n";

while read line; do
  echo "Processing Event: $line" >&2;
  kill -3 $(cat "/var/run/supervisord.pid")
done < /dev/stdin

uwsgi-nginx: supervisord.conf

# copied from https://github.com/tiangolo/uwsgi-nginx-docker/blob/master/python3.7/supervisord.conf
[supervisord]
nodaemon=true

[program:uwsgi]
command=/usr/local/bin/uwsgi --ini /etc/uwsgi/uwsgi.ini
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0
startsecs = 0
autorestart=false

[program:nginx]
command=/usr/sbin/nginx
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0
# Graceful stop, see http://nginx.org/en/docs/control.html
stopsignal=QUIT

[eventlistener:processes]
command=/etc/supervisor/stop-supervisor.sh
events=PROCESS_STATE_STOPPED, PROCESS_STATE_EXITED, PROCESS_STATE_FATAL

tiangolo/uwsgi-nginx-docker#61