Running 'php artisan schedule:run' for Laravel in Kubernetes CronJobs

I am working on integrating a few Laravel PHP applications into a new Kubernetes architecture, and every now and then we hit a little snag. For example, the app developers noticed that when their cron job ran (php artisan schedule:run), the MySQL container in the cluster would drop an error message like:

2019-03-27T16:20:05.965157Z 1497 [Note] Aborted connection 1497 to db: 'database' user: 'myuser' host: '' (Got an error reading communication packets)

In Kubernetes, I had the Laravel app CronJob set up like so:

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