Docker signal

Dockerfile

FROM python:3 as base

FROM base as target2
COPY main2.py /
CMD python3 -u main2.py

FROM base as target1
COPY main.py /
CMD python3 -u main.py

main.py

from time import sleep
import logging

try:
    while True:
        sleep(1)
        print('hello')
except:
    logging.exception('exception catched')

main2.py

from time import sleep
import logging
from signal import signal, SIGINT, SIGTERM, SIGSTOP, SIGKILL

def handler(signum, frame):
    print('signal num=%i frame: %s' % (signum, frame))

signal(SIGINT, handler)
signal(SIGTERM, handler)
#signal(SIGSTOP, handler)
#signal(SIGKILL, handler)

try:
    while True:
        sleep(1)
        print('hello')
except:
    logging.exception('exception catched')

test1.sh

#!/bin/sh
set -xe
docker build -t docker-restart .
docker run --name=docker-restart -d docker-restart
sleep 10
docker stop docker-restart
docker logs docker-restart
docker rm docker-restart
docker rmi docker-restart

test1b.sh

#!/bin/sh
set -xe
docker build -t docker-restart .
docker run --init --name=docker-restart -d docker-restart
sleep 10
docker stop docker-restart
docker logs docker-restart
docker rm docker-restart
docker rmi docker-restart

test2.sh

#!/bin/sh
set -xe
docker build -t docker-restart --target=target2 .
docker run --name=docker-restart -d docker-restart
sleep 10
docker stop docker-restart
docker logs docker-restart
docker rm docker-restart
docker rmi docker-restart

test2b.sh

#!/bin/sh
set -xe
docker build -t docker-restart --target=target2 .
docker run --init --name=docker-restart -d docker-restart
sleep 10
docker stop docker-restart
docker logs docker-restart
docker rm docker-restart
docker rmi docker-restart