Can I inject certificates or other files into my app at build time?

No, App Platform does not currently support injecting values as files on disk. However, you can add the contents of a certificate or file as an environment variable and then save that value to disk using build or run time commands.

For example, MongoDB requires a Certificate Authority (CA) certificate for clients to connect to a cluster, and most MongoDB clients require the certificate to be a file on disk. You can work around the injection limitation by creating an environment variable, such as MONGO_CA_CERT=${db.CA_CERT}, during the app’s creation process or by updating its settings. Then, you can add a command to the app that creates the certificate file upon runtime, such as echo $MONGO_CA_CERT > ca_cert.cert && <original run command>. App Platform requires the original run time command to start the app upon runtime.

Related Topics

Why am I receiving 520 status codes from my app?

Your app may have crashed while trying to receive an upload or return a response larger than it has been configured to manage.

Why am I receiving a forbidden error when making changes to my App Platform app?

Your team balance may be past due. Pay your balance to lift restrictions on actions you can take on the platform.

Why does my app not restart when it fails a health check?

If an app’s health check fails, the app currently does not restart. This is because App Platform does not currently support liveness probes. An app only automatically restarts if the app crashes or if its disk or RAM usage exceeds the its limits.