How to: Run Quay 3.x and above under a non-root user

In most cases we run Quay under a root user and in root environment. This is typical for Docker type deployments where all containers run under the daemon which is started under root, while processes inside the container are run under a random user. Podman, however, allows us to run Quay in a completely rootless environment, under a completely arbitrary user, for extra security. In this articl...