I wrote a new handy script (install_1013_DP5_17A330h.sh) to install macOS High Sierra Beta DP-5.
The installer.pkg created by the script will simulate the App Store download and installation method, and all you have to do is:
1.) Run install_1013_DP5_17A330h.sh
2.) Run /Applications/Install macOS High Sierra Beta.app
Notes: I have yet to try this script myself – I cannot download the files right now (we’re still at sea). Also. You may want to run checkAPFSSettings.sh in single-user mode.
Edit: First confirmation per e-mail. Script is working!
Please note that the App Store.app downloads files to: /Library/Updates but the script uses: /tmp/091-26416 and all the downloaded files will be gone after a reboot and thus you may want to make a backup of the files!