Using Cloudflare Workers to Build Your Own Docker Image Source

A few days ago, all major mirror sites went down, making it a problem to pull Docker images.

At first, I didn't care; when it was down, I just used a proxy to pull. However, when I used Docker locally, even with the proxy, I couldn't pull normally.

So I started looking for solutions and found the following options:

Build using Cloudflare Workers, requires a domain -> Original Post
Self-host Nexus 3, requires a foreign VPS, preferably with 4GB RAM or more, and also requires a domain -> Original Post
Use Github Action to transfer DockerHub images to Alibaba Cloud private repository, this only requires a Github account -> Original Post
Use Nginx reverse proxy, more suitable for those who already have a server -> Original Post
Other options include finding ready-made image sources, but these are generally not very stable, so I didn't consider this.

I used the first option, which is relatively simple. The tutorial in the original post is not very detailed, so I will elaborate here.

Go to Cloudflare homepage, create a new Worker in the left Workers & Pages, and save the Account ID on the right.

Give the Worker a name, click Save, then click Finish.

When this page appears, you can proceed to the next step.

Fork this repository, Clone it to your local machine.

As usual, first install the dependencies.

pnpm i

Then rename wrangler.toml.sample to wrangler.toml.

cp wrangler.toml.sample wrangler.toml

Edit the wrangler.toml file, modifying name and account_id.

name = "name of the worker"
account_id = "fill in the Account ID copied above"
main = "src/index.ts"
workers_dev = true
compatibility_date = "2024-06-08"

kv_namespaces = [
	 { binding = "HAMMAL_CACHE", id = "your kv id" }
]

Get the kv ID, executing the command below will output the id, modify the id in the configuration.

npx wrangler kv:namespace create hammal_cache

Output

Then deploy by executing.

pnpm run deploy

Warning

You will be prompted that you are about to publish a Workers service, which was last published through the Cloudflare Dashboard. Edits made through the Cloudflare Dashboard will be overwritten by your local code and configuration.

Enter y, and it should normally open the browser for you to authorize. Just authorize; I didn't get a prompt here because I had already deployed it.

Add a domain to the newly deployed Worker.

Wait for the domain to take effect, and you can use it normally. Generally, on the server, modify /etc/docker/daemon.json, and configure the source address you just set up.

"registry-mirrors": [
    "https://hammal.example.com"
  ]

I am using Orbstack on Mac, so I need to configure it directly in the software.

This article is synchronized and updated to xLog by Mix Space. The original link is https://remrin.dev/posts/dev/docker