To test your container app, one way is to access your app via its FQDN or the URL. You can get the FQDN with the command below.
FQDN=$(az containerapp show -n $CONTAINER_APP_NAME -g $RESOURCE_GROUP \
--query properties.configuration.ingress.fqdn -o tsv)
echo "$FQDN"
WARNING: The behavior of this command has been altered by the following extension: containerapp
orders-api.a1b2c3d4.westus2.azurecontainerapps.io