How to Create a Private Docker Registry: Local Image Repository and DockerHub Proxy
In this video, we'll discuss how to create a private Docker Registry on a local network and why it's necessary in DevOps practice. I'll show two options: running registry:2 as a local image store and configuring Nexus Sonatype as a proxy repository for DockerHub. You'll learn how to docker push and docker pull, how to properly tag images, the purpose of insecure-registries and registry-mirrors in daemon.json, and why a local registry speeds up container boot, saves bandwidth, and simplifies work in closed networks. This video is especially useful for those learning Docker, Kubernetes, and CI/CD and wanting to better understand Docker image storage and caching.
00:00 Let's Go
01:34 Recommendations
02:15 Registry
07:00 Docker Push to Registry
09:20 Where are images stored?
10:00 Docker Pull with Registry
10:35 Important Notes
10:55 Caching Registry
18:09 Benefits of a Caching Repository
18:28 Nexus Sonatype
21:54 Creating a Repository in Nexus Sonatype
24:25 Comparing Registry with Nexus Sonatype