如何使用 docker 容器连接远程数据库？

Question

克隆一个laravel并将其dockerize以在本地运行该项目，但我不知道如何连接到远程数据库，也就是说，我不想创建一个mysql容器，以连接到我拥有的所述数据库主机、用户和密码，我想知道，我该怎么做才能将我的容器连接到该数据库？然后我添加我的 docker compose 和我的 dockerfile。

docker 撰写

version: "3.4"

services:

  project:
    build:
      context: ./
    image: project:latest
    ports:
      - "80:80"

docker文件

FROM php:8.0-fpm

# Set working directory
WORKDIR /var/www

# Add docker php ext repo
ADD https://github.com/mlocati/docker-php-extension-installer/releases/latest/download/install-php-extensions /usr/local/bin/

# Install php extensions
RUN chmod +x /usr/local/bin/install-php-extensions && sync && \
    install-php-extensions mbstring pdo_mysql zip exif pcntl gd memcached

# Install dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    libpng-dev \
    libjpeg62-turbo-dev \
    libfreetype6-dev \
    locales \
    zip \
    jpegoptim optipng pngquant gifsicle \
    unzip \
    git \
    curl \
    lua-zlib-dev \
    libmemcached-dev \
    nginx

# Install supervisor
RUN apt-get install -y supervisor

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

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

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

# Copy code to /var/www
COPY --chown=www:www-data . /var/www

# add root to www group
# RUN chmod -R ug+w /var/www/storage
RUN chmod -R 777 /var/www/storage/

# Copy nginx/php/supervisor configs
RUN cp docker/supervisor.conf /etc/supervisord.conf
RUN cp docker/php.ini /usr/local/etc/php/conf.d/app.ini
RUN cp docker/nginx.conf /etc/nginx/sites-enabled/default

# PHP Error Log Files
RUN mkdir /var/log/php
RUN touch /var/log/php/errors.log && chmod 777 /var/log/php/errors.log

# Deployment steps
RUN composer install --optimize-autoloader --no-dev
RUN chmod +x /var/www/docker/run.sh

EXPOSE 80
ENTRYPOINT ["/var/www/docker/run.sh"]

Answer 1

您可以通过 docker-compose 使用环境变量传递数据库配置

version: "3.4"

services:
  project:
    build:
      context: ./
    image: project:latest
    ports:
      - "80:80"
    environment:
      DB_CONNECTION=${DB_CONNECTION}
      DB_HOST=${DB_HOST}
      DB_PORT=${DB_PORT}
      DB_DATABASE=${DB_DATABASE}
      DB_USERNAME=${DB_DB_USERNAME}
      DB_PASSWORD=${DB_DB_PASSWORD} 

Answer 2

您还可以（为了方便起见）添加本地 .env 文件（或者您用于数据库信用的文件：

version: "3.4"

services:

  project:
    build:
      context: ./
    image: project:latest
    ports:
      - "80:80"
    env_file:
      - .env.local

无论如何，如果你有一个定义的环境，会让生活变得更轻松:)

Answer 3

对我来说，当我写下我的本地网络IP - 192.168.0.XXX时，它就工作了。

postgres://postgres:[email protected]:5432/docker_db_name_prod

。