Start with Docker and a PaaS like Heroku/Render/Fly/Dokku to get the core web service things without getting lost in all the proprietary vendor-specific things,

Start with Docker and a PaaS like Heroku/Render/Fly/Dokku to get the core web service things without getting lost in all the proprietary vendor-specific things, or the madness of building one's own cloud just to run some web applications (Kubernetes etc).