Cloudflare自建Docker加速

export default {
    
    async fetch(request) {
        
        const url = new URL(request.url)
        const path = url.pathname
        const originalHost = request.headers.get('host')
        const registryHost = 'registry-1.docker.io'
        
        const headers = new Headers(request.headers)
        headers.set('host', registryHost)
        const registryUrl = `https://${registryHost}${path}`
        const registryRequest = new Request(registryUrl, {
            method: request.method,
            headers: headers,
            body: request.body,
            redirect: 'follow'
        })
        
        const registryResponse = await fetch(registryRequest)
        const responseHeaders = new Headers(registryResponse.headers)
        responseHeaders.set('access-control-allow-origin', originalHost)
        responseHeaders.set('access-control-allow-headers', 'Authorization')
        
        return new Response(registryResponse.body, {
            status: registryResponse.status,
            statusText: registryResponse.statusText,
            headers: responseHeaders
        })
        
    }
    
};