[docker] 多容器项目 - PHP+MySQL+Nginx+utility containers

[docker] 多容器项目 - PHP+MySQL+Nginx+utility containers

这个项目总共会配置 6 个容器，主要还是学习一下 docker 的使用和配置，目标是：

• 本机不安装 PHP、Nginx

  安装部分全都交给 docker 容器实现

• 可以运行一个 Laravel 网页项目

• 修改本机代码可以即时更新网页

大概流程是这样的：

主机只负责保存必要的源码，PHP 容器会读取本机变动的源码，随后进行必要的更新

这个项目也是把之前所有学的知识点全都整合一下，本项目没有任何的 PHP 实现

service 实现

按照模块分

nginx

YAML 部分配置如下：

 是 laravel 的默认数据库名称，配置方面的就不多赘述了
 
这时候项目结构如下
 
❯ tree
 
修改 laravel 配置
 
这里主要修改的是 src/.env，之前提到了现在 laravel 已经使用 sqlite 了，所以需要修改一下 mysql 的配置：
 
# 大概是 22-27 行这里
DB_CONNECTION=mysql
DB_HOST=mysql
DB_PORT=3306
DB_DATABASE=homestead
DB_USERNAME=homestead
DB_PASSWORD=secret
 
运行 laravel 项目
 
这里使用 docker compose up，使用方式有两种：
 
# 1. 这里会运行指定的3个容器
❯ docker compose up server php mysql
# 2. 或者配置 depends_on，之前没有配置，不过在我的 docker compose 里已经补上了
❯ docker compose up server
# 省略掉一些 download 和 build
[+] Running 0/3
 ⠹ Container section08-php-1     Created                                                                                                              0.2s
 ⠹ Container section08-mysql-1   Created                                                                                                              0.2s
 ⠋ Container section08-server-1  Created                                                                                                              0.1s
Attaching to server-1
server-1  | /docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
server-1  | /docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
server-1  | /docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
server-1  | 10-listen-on-ipv6-by-default.sh: info: can not modify /etc/nginx/conf.d/default.conf (read-only file system?)
server-1  | /docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
server-1  | /docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh
server-1  | /docker-entrypoint.sh: Configuration complete; ready for start up
server-1  | 2024/04/25 03:45:52 [notice] 1#1: using the "epoll" event method
server-1  | 2024/04/25 03:45:52 [notice] 1#1: nginx/1.24.0
server-1  | 2024/04/25 03:45:52 [notice] 1#1: built by gcc 12.2.1 20220924 (Alpine 12.2.1_git20220924-r4)
server-1  | 2024/04/25 03:45:52 [notice] 1#1: OS: Linux 6.6.22-linuxkit
server-1  | 2024/04/25 03:45:52 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1048576:1048576
server-1  | 2024/04/25 03:45:52 [notice] 1#1: start worker processes
server-1  | 2024/04/25 03:45:52 [notice] 1#1: start worker process 21
server-1  | 2024/04/25 03:45:52 [notice] 1#1: start worker process 22
server-1  | 2024/04/25 03:45:52 [notice] 1#1: start worker process 23
server-1  | 2024/04/25 03:45:52 [notice] 1#1: start worker process 24
server-1  | 2024/04/25 03:45:52 [notice] 1#1: start worker process 25
server-1  | 2024/04/25 03:45:52 [notice] 1#1: start worker process 26
server-1  | 2024/04/25 03:45:52 [notice] 1#1: start worker process 27
server-1  | 2024/04/25 03:45:52 [notice] 1#1: start worker process 28
 
看起来服务器已经成功启动了：
 
 
⚠️：这里的报错是因为 mysql 没有成功配置好的关系，现在 laravel 默认使用的是 sqlite，所以配置都是按照 sqlite 进行的，等到下一步配置完 artisan 就好了
 
artisan & npm
 
compose 配置如下：
 
artisan:
  build:
    context: "./dockerfiles"
    dockerfile: "php.dockerfile"
  volumes:
    - ./src:/var/www/html:delegated
  entrypoint: ["php", "/var/www/html/artisan", "migrate"]
npm:
  image: node:20-alpine
  working_dir: /var/www/html
  entrypoint: ["npm"]
  volumes:
    - ./src:/var/www/html:delegated
 
这两个没有新创建一个 dockerfile——也不是不可以，不过这里展现一下不用新建 dockerfile 也可以实现 entrypoint 之类的功能。
 
同样，这两个也是 util container
 
artisan 运行结果如下：
 
❯ docker compose run --rm artisan
WARN[0000] /Users/user/study/docker/section08/docker-compose.yaml: `version` is obsolete

   INFO  Preparing database.

  Creating migration table ...................................... 25.68ms DONE

   INFO  Running migrations.

  0001_01_01_000000_create_users_table .......................... 79.47ms DONE
  0001_01_01_000001_create_cache_table .......................... 27.05ms DONE
  0001_01_01_000002_create_jobs_table ........................... 82.80ms DONE
 
这代表数据库已经 migrate 成功了：
 
 
npm 运行结果如下：
 
❯ docker compose run --rm npm
WARN[0000] /Users/user/study/docker/section08/docker-compose.yaml: `version` is obsolete
npm <command>

Usage:

npm install        install all the dependencies in your project
npm install <foo>  add the <foo> dependency to your project
npm test           run this project's tests
npm run <foo>      run the script named <foo>
npm <command> -h   quick help on <command>
npm -l             display usage info for all commands
npm help <term>    search for help on <term>
npm help npm       more involved overview

All commands:

    access, adduser, audit, bugs, cache, ci, completion,
    config, dedupe, deprecate, diff, dist-tag, docs, doctor,
    edit, exec, explain, explore, find-dupes, fund, get, help,
    help-search, hook, init, install, install-ci-test,
    install-test, link, ll, login, logout, ls, org, outdated,
    owner, pack, ping, pkg, prefix, profile, prune, publish,
    query, rebuild, repo, restart, root, run-script, sbom,
    search, set, shrinkwrap, star, stars, start, stop, team,
    test, token, uninstall, unpublish, unstar, update, version,
    view, whoami

Specify configs in the ini-formatted file:
    /root/.npmrc
or on the command line via: npm <command> --key=value

More configuration info: npm help config
Configuration fields: npm help 7 config

npm@10.5.0 /usr/local/lib/node_modules/npm
 
至此，就完成了不需要在本机上安装这些功能，但是依旧可以启动一个 laravel 项目的 docker 案例了