错误 2002 （HY000）：无法通过套接字连接到本地 MySQL 服务器

问：

我在尝试连接到数据库时在 debian 测试中遇到了此错误。ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2 "No such file or directory")

我在 Dockerfile 中进行了以下设置：

FROM debian:testing

RUN apt update && apt full-upgrade -y \ 
        && apt install -y --no-install-recommends \
        apache2 \
        php \
        libapache2-mod-php \
        mariadb-server \
        php-mysql \
                openjdk-9-jdk \
                git \
        && rm -rf /var/lib/apt/lists/*

RUN /etc/init.d/mysql start

# Copy the database schema to the /data directory
ADD ./mgsv.sql /tmp/

# Permit root login without password from outside container.
RUN mysql -e "GRANT ALL ON *.* TO root@'%' IDENTIFIED BY '' WITH GRANT OPTION"

# create the default database from the ADDed file.
RUN mysql < mgsv.sql

RUN git clone https://github.com/qunfengdong/mGSV.git

mgsv.sql 如下所示：

CREATE DATABASE mgsv;
CREATE USER 'mgsv_user'@'localhost' IDENTIFIED BY 'mgsvpass';
GRANT SELECT, INSERT, CREATE, DROP ON mgsv.* TO 'mgsvuser'@'localhost';
use mgsv;
CREATE TABLE IF NOT EXISTS `userinfo` (
    `id` int(10) NOT NULL AUTO_INCREMENT,
    `email` text NOT NULL,
    `hash` text NOT NULL,
    `synfilename` text NOT NULL,
    `annfilename` text NOT NULL,
    `url` text NOT NULL,
    `session_id` text NOT NULL,
    `annImage`   int(5) NOT NULL,
    `create_on` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP, PRIMARY KEY (`id`)
        ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=3 ;

我错过了什么？

先谢谢你