Building Production-Ready Docker Deployments with Secrets, Stacks, and Distroless Images
This post wraps up the core Docker Swarm curriculum by covering four important topics that complete the picture of production-ready containerized deployments. We start with Docker Secrets, which solves the real-world problem of passing sensitive credentials into containers without hardcoding them. We then look at Docker Stack, which is how you run multi-service Docker Compose files across a Swarm cluster instead of a single host. After that we cover the distinction between replicated and global services, which is a concept that appears in Kubernetes as well. We close with a look at Portainer for those who prefer a visual interface, and a brief introduction to distroless images. Each of these topics builds on everything covered so far. If you have your Swarm cluster running, you can follow along with every command shown here.
