README.md

In order to build the docker image, you need to build the env image first.

```bash
docker build -t xcid/remote-code-mcp-env:v2 -f Dockerfile.env .
docker save xcid/remote-code-mcp-env:v2 > docker-base-image.tar
```

Then you can build the main image.

```bash
docker build -t xcid/remote-code-mcp:vX .
```