I'm looking to set up a development environment on my local network using Docker and my Synology DS918+. I have a few computers across different platforms including MacOS, Windows (10 and 11), and Linux (Ubuntu and Raspbian). My aim is to create applications in Go and Python, push them to a private Docker registry on my Synology, and then run these Docker images on the Synology and other machines in my LAN.
I'm interested in learning how to deploy services across multiple platforms using Docker while creating an environment that's independent of the underlying operating systems. For instance, I might develop an API on a Linux machine that supports CUDA, but then run a different Docker image on a Windows machine that connects to a specific Windows data aggregator. I'm also using Mikrotik hardware for my network setup.
Here are my main questions:
1. How do I safely set up a private Docker registry on my Synology DS918+ for use within my LAN without exposing it to the outside world?
2. What common pitfalls should I avoid when configuring this on my Synology NAS to ensure efficient resource usage?
I'm relatively new to the concept of a private Docker registry, as I've only used public registries before.
3 Answers
One thing you might want to think about is how you manage backups for your images. Even though it’s just for local development, losing your data can be frustrating. And don't forget to consider your network setup; ensure that everything can talk to your NAS without firewall issues.
Setting up a private registry is pretty straightforward! Start by installing the Container Management Package on your Synology NAS. Then, you can go to the container manager, search for `registry:2` from Docker Hub, and create a container with port mapping for 5000:5000. Don't forget to allow insecure registries in your Docker configuration:
```
{
"insecure-registries": ["nas.lan:5000"]
}
```
Just a heads up, this basic setup doesn't come with authentication, but since it's just for local use, it should be fine.
I agree, that setup is quite easy. Just make sure you also use version 3 of the registry if it's available—it has some improvements over version 2. Also, keep an eye on resource usage; Synology NAS can handle multiple containers but monitor it to avoid performance dips.
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