I succeed to create the file and mount it.
The tutorial have errors. It creates a files named my-container.img at the
beginning and call it mycontainer which gives an error in the terminal.
But I still have a problem to drag and drop the files or even copy and paste
my file in the container once it's mounted.
The real proprietary of "my-mouth-point" if you follow all the steps is not
your computer, it is "root".
I came into /dev/mapper so see if there was any secret-device file, and there
wasn't.
