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Docker Hub 镜像加速器

国内从 Docker Hub 拉取镜像有时会遇到困难，此时可以配置镜像加速器。

Dockerized 实践 https://github.com/y0ngb1n/dockerized

	// SPDX-License-Identifier: MIT
	// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

	pragma solidity ^0.8.20;

	import {Context} from "../utils/Context.sol";

	/**
	* @dev Contract module which provides a basic access control mechanism, where
	* there is an account (an owner) that can be granted exclusive access to