App settings
Use the app's Settings to change the port, secrets and access, or to pause or remove the app.
Port#
The platform picks a container app's port in this order and passes it to your program in the PORT environment variable:
- The value in Settings › Runtime settings › Port, if set.
- Otherwise, the one TCP port the image
EXPOSEs. - Otherwise,
8080.
Secrets#
Secrets are confidential values such as API keys and tokens. You enter them in the console, and your code reads them as environment variables. Each branch has its own secrets.
Enter secrets only in the console
Don't put them in a file or a command, and don't paste them into a conversation with an AI tool.
Apply settings#
Saving runtime settings doesn't change what is running. The overview says the settings have changed; select Restart service to apply them. The old instances keep serving until the new ones are ready.
Pause, remove and delete#
| Action | What happens | Can it be undone? |
|---|---|---|
| Pause app | The app goes offline and visitors see a neutral page. Everything is kept, and no new version can be deployed while it's paused. | Yes. Select Resume app. |
| Remove app | The app goes offline now and a seven-day grace period starts. | Restore it within seven days. After that, its versions are deleted. |
| Delete permanently | Every version and address is deleted now. You type the app's name to confirm. | No. The address is never given to anyone else. |