Have a look at the .github/workflows/pullpreview.yml file, as well as the docker-compose.* files to see how it's setup.
Deployments are visible on https://github.com/pullpreview/demo-ruby-on-rails/deployments.
In this demo, PullPreview is configured with Caddy as a proxy, which automatically provides SSL certificates, as well as protecting the access to the preview environment with a Basic Auth:
- username=
admin - password=
p4ssw0rd
PULLPREVIEW_PUBLIC_DNS=perso.click docker-compose -f docker-compose.yml -f docker-compose.pullpreview.yml up