Question 1

What is MCP Server?

Accepted Answer

MCP Server is a GitHub Action that helps developers mirror Docker images from international registries like DockerHub to private Alibaba Cloud repositories for faster access in China.

Question 2

Which Docker registries are supported by MCP Server?

Accepted Answer

MCP Server supports DockerHub, gcr.io, k8s.io, ghcr.io, and any other Docker image registry.

Question 3

What is the maximum size of Docker images supported by MCP Server?

Accepted Answer

MCP Server supports Docker images up to 40GB.

Question 4

What Alibaba Cloud services are required to use MCP Server?

Accepted Answer

You need to use Alibaba Cloud Container Registry. Specifically, you need to enable a personal instance and create a namespace.

Question 5

What Alibaba Cloud credentials do I need to configure?

Accepted Answer

You need the username, password, and registry address from your Alibaba Cloud Container Registry.

Question 6

How do I configure MCP Server?

Accepted Answer

You configure MCP Server by forking the project, setting environment variables in your GitHub repository with your Alibaba Cloud credentials, and adding the desired image names to the `images.txt` file.

Question 7

Where do I add the names of the Docker images I want to mirror?

Accepted Answer

You add the Docker image names to the `images.txt` file in your forked repository.

Question 8

How do I specify the image tag when adding an image to `images.txt`?

Accepted Answer

You can add the tag after the image name (e.g., `alpine:latest`). If you don't specify a tag, the default tag `latest` is used.

Question 9

How do I specify the architecture when adding an image to `images.txt`?

Accepted Answer

You can use the `--platform=xxxxx` parameter to specify the architecture (e.g., `alpine --platform=linux/arm64`).

Question 10

How do I mirror images to a specific private repository?

Accepted Answer

Use the format `k8s.gcr.io/kube-state-metrics/kube-state-metrics` in the `images.txt` file to specify the private repository.

Question 11

How do I add comments to the `images.txt` file?

Accepted Answer

Use the `#` symbol at the beginning of a line to add a comment.

Question 12

How can I access mirrored images?

Accepted Answer

Access the images in your Alibaba Cloud Container Registry using `docker pull registry.cn-hangzhou.aliyuncs.com/your-namespace/image-name`.

Question 13

How does MCP Server handle images with the same name but from different namespaces?

Accepted Answer

MCP Server automatically adds the namespace as a prefix to the image name to avoid conflicts.

Question 14

Can I schedule MCP Server to run automatically?

Accepted Answer

Yes, you can schedule MCP Server by modifying the `/.github/workflows/docker.yaml` file and adding a `schedule` section with a cron expression.

Question 15

Is MCP Server free to use?

Accepted Answer

Yes, MCP Server is a free and open-source project.

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