Monitoring file changes in Docker volumes

Question

I have a docker container that is running a python script: waiting for input requests and processing data accordingly.

Since I am using docker for development,

Answer 1

You could have your container run something like this ( need inotify installed ):

while true
do
        inotifywait -e create -e modify  /path/to/python/script
        pkill python
        python /path/to/python/script
done

Basically wait for changes on the file, kill python on the machine, run script again. If the python script is not running in the background/deamonized in any way you could use an & like so: the python /path/to/python/script &

Put this into run.sh, add something like this to your Dockerfile

COPY run.sh /run.sh
CMD ["bash", "-l", "/run.sh"]

... and you should be good.