You could achieve this by sharing a volume between your computer and the Docker container.
Something like this should work:
docker run --rm -it -v C:\Users\eqx1\bash2py-3.6:/app imiell/bash2py bash -c /app/myscript.sh
-v flag will map a volume from
C:\Users\eqx1\bash2py-3.6 on the host (i.e., your PC) to a folder called
/app inside the container. Then the parameter
bash -c /app/myscript.sh will run a
bash shell passing
/app/myscript.sh as an argument which should be mapped to the
/app folder from your PC.
--rm option will remove the container after it exists so that you don’t have to do this manually.
Feel free to ask more questions if this explanation isn’t clear.