This question shows how to copy files out of a stopped container. This requires that I know the full path to the file including its file name. I know the directory I want to c
docker container cp : -
Notice the "-" at the end of the command.
It actually "copies" the specified file from the stopped container into "stdout". In other words, it just prints the file contents.
Thanks @azat-khadiev for your direction (I don't know why you got "-1 for that answer...)