How to run a Node.js, Python or .NET app as a container

How-to Websites and PHP containerpodmannodejspythondotnetjavaruby

Create a container from a preset or any image, get a subdomain and certificate, and learn which port the app must listen on.

Websites, Containers runs an application as a rootless Podman container owned by your account, with its own subdomain and certificate. It needs a License to create new ones.

Steps

1. Choose a preset (ASP.NET Core, Node.js, Python, Ruby or Java) or name an image. A preset pre-fills the official image, the port and the volume.
2. Pick a subdomain for the container. It must not belong to another client's names.
3. Read the page's hint: it tells you where to put your code and which port to listen on. Apps must listen on 0.0.0.0, not only on localhost, or the proxy cannot reach them.
4. Create it. The container gets a loopback-only port from 33000 upward; visitors reach it through your subdomain on 443.
5. Upload your code to the volume and restart if needed.

What to know

• Containers count against your plan and your disk quota, stop when the account is suspended, and come back after a node reboot.
• A Kubernetes manifest can be deployed through the API (POST /api/contenedores/kube); host ports, host networking and privileged containers are rejected. There is no screen for this yet.
• If the license lapses, existing containers keep running; creating new ones is blocked and removing is never blocked.

Last updated: 2026-10-10