Properly run a Docker container which create files

properly.run.docker

#!/usr/bin/env bash

docker run  \
  --volume $(pwd):/data  \
  --user $(id -u $USER):$(id -g $USER)  \
  --entrypoint /path/to/your_program  \
  CONTAINER_NAME  \
  --input /data/inputfile --output /data/outputfile
  
# Will run '/path/to/your_program --input /data/inputfile --output /data/output' inside the container,
# reading '/data/inputfile' and writing to '/data/outputfile' ('./inputfile' and './outputfile' once
# you leave the container). './outputfile' will non belong to 'root' but you.