It is fairly simple to make an HDI of this game, but you'll first need to have an HDI with DOS 5.0 or later installed on it. From there, you boot into DOS, insert the system disk, navigate to the disk and type HDINST. This will start the installation process (which is basically just copying files from the floppy disks themselves to the hard drive). It'll prompt you to switch disks until it's done. To run the game, run the CRWHD.BAT from the hard drive (or make an autoexec.bat file to run it automatically).
You can also always use programs like EditDisk or ND to copy the files directly and bypass the installer.
Edit: To be clear, you don't have to do the above to play the game. This is just the process to install it to a hard disk image file. You can easily play the game directly from the floppy disk images.