E: 使用 docker compose 在 php-fpm 映像构建中，包 'mysql-client' 没有安装候选

问题描述

我对 docker 很陌生，所以我尝试使用 laravel 项目了解更多关于它的信息，我正在关注本教程:

Im fairly new to docker and so im trying to learn more about it using a laravel project, im following this tutorial:

https://www.digitalocean.com/community/tutorials/how-to-set-up-laravel-nginx-and-mysql-with-docker-compose

我已经根据教程的内容稍微调整了 Dockerfile，但即使是教程文件也会导致相同的结果.

Ive adjusted the Dockerfile a bit from what the tutorial has but even the tutorial file causes the same result.

FROM php:7.3-fpm

# Copy composer.lock and composer.json
COPY composer.lock composer.json /var/www/
# Install dependencies
RUN curl -sL https://deb.nodesource.com/setup_10.x | bash - &&
    apt-get update && apt-get install -y mysql-client


RUN npm install -g npm

# Clear cache
RUN apt-get clean && rm -rf /var/lib/apt/lists/*


# Install extensions
RUN docker-php-ext-install pdo pdo_mysql

# Install composer
RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer

# Add user for laravel application
RUN groupadd -g 1000 www
RUN useradd -u 1000 -ms /bin/bash -g www www

# Copy existing application directory contents
COPY . /var/www

# Copy existing application directory permissions
COPY --chown=www:www . /var/www

# Change current user to www
USER www
# Set working directory
WORKDIR /var/www
# Expose port 9000 and start php-fpm server
EXPOSE 9000

CMD ["php-fpm"]

但是当我运行 docker-compose up -d 时，我不断收到以下错误:

But i keep getting the following error when i run docker-compose up -d:

E: Package 'mysql-client' has no installation candidate
ERROR: Service 'app' failed to build: The command '/bin/sh -c curl -sL https://deb.nodesource.com/setup_10.x | bash - &&     apt-get update && apt-get install -y mysql-client     nodejs     build-essential     vim     git     curl' returned a non-zero code: 100

我错过了什么吗?

我希望这可以工作，因为我在安装 mysql-client 之前正在运行 apt-get update.

I expected this to work since i am running apt-get update before installing mysql-client.

谢谢.

推荐答案

php:7.3-fpm 现在使用 Debian 10 (Buster) 作为它的 基础映像 和 Buster 附带 MariaDB，所以只需将 mysql-client 替换为 mariadb-client 应该修复它.

php:7.3-fpm now use Debian 10 (Buster) as its base image and Buster ships with MariaDB, so just replace mysql-client with mariadb-client should fix it.

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