While Craft 3 is still in beta, the only way to install it is via Composer. If you’re unfamiliar with Composer, it’s a package manager (like npm) that attempts to make installing and updating PHP libraries easy via terminal commands.
Here's an abbreviated form of the steps found in the Craft docs on installing Craft 3:
- Download Composer on your VPS (instructions here)
- Create a new Craft project -
composer create-project -s RC craftcms/craft PATH
- Ensure the web server is pointing to the right directory and that your database is setup.
- Point your browser to
http://website-url.com/index.php?p=admin to complete the setup process.
- With that, you should be running the latest RC of Craft!
I'd recommend checking out the Craft 3 docs and also Ryan Irelan's fantastic videos on Installing Composer and Installing Craft 3. If you have any more questions about the process, don't hesitate to ping me in the comments or post a message in the Craft CMS Slack group.
UPDATE: Pixel & Tonic has mentioned they're hoping to include a .zip download (similar to the Craft 2 installation process) when they fully release Craft 3 on April 4th. Till then, Composer is the only way to download & setup Craft 3.