PortBinding [rule] v1.0.0

The app is self-contained — it does not require a runtime injection of a webserver (Apache, nginx) into the execution environment. The app exports HTTP (or any protocol) by binding to a port that the environment hands it. The platform routes external requests to that port.

Checks

• The app reads a PORT env var and binds it itself (Express app.listen, Go http.ListenAndServe).
• No assumption that nginx is in front; the app must function as the public-facing server.
• Reverse proxies / load balancers are infra concerns layered above, not preconditions.
• This applies to non-HTTP services too — bind a port, speak whatever protocol.

Label

Export services via port binding; the app is self-contained

PortBinding [rule] v1.0.0

The app is self-contained — it does not require a runtime injection of a webserver (Apache, nginx) into the execution environment. The app exports HTTP (or any protocol) by binding to a port that the environment hands it. The platform routes external requests to that port.

Checks

• The app reads a PORT env var and binds it itself (Express app.listen, Go http.ListenAndServe).
• No assumption that nginx is in front; the app must function as the public-facing server.
• Reverse proxies / load balancers are infra concerns layered above, not preconditions.
• This applies to non-HTTP services too — bind a port, speak whatever protocol.

Label

Export services via port binding; the app is self-contained

Label

Export services via port binding; the app is self-contained