My current solution of access the file from both Docker container and host machine (Mac) is to use Docker-compose file. Instead of setting volume in the Dockerfile or by docker command, I put the volume in the docker-compose in the same folder with the docker files.

Here is an extreme simple version:

services:

my_service:

build: .

entrypoint: run_scripts

volumes:

- ./output:/home/run_user/output:rw

The container can put file in its /home/run_user/output folder and it shows on the host machine ./output folder.

I might share all the detail about this in another story :)