Publishing a Docker image is simple. Managing a Kubernetes cluster, even hosted, may be much more complex, for no added benefit. Throw your container on a VM,

Publishing a Docker image is simple. Managing a Kubernetes cluster, even hosted, may be much more complex, for no added benefit. Throw your container on a VM, make systemd or even runit keep it running. It scales fine to half dozen boxes if needed. Same for your Postgres DB. For extra fancy points, keep a hot standby / read replica, and pick up any of the manual switch-over scripts. Should keep you running until dozen million DAU, with half-day spent on the initial setup.