How to deploy php application with docker

Docker method of deploying PHP applications: 1. Create a basic PHP web project site1 and package it into the image; 2. Use the PHP built-in web server in the image to provide external services; 3. Put it on the host machine Mount the project directory to the working directory of the container; 4. Run php in fpm mode.

The operating environment of this tutorial: Windows 7 system, Docker version 20.10.11, Dell G3 computer.

How to deploy php application with docker?

Use docker to package and deploy php applications

When the project development is gradually completed, it is necessary to prepare for large-scale cluster deployment, repeated environment installation, configuration and Although the source code uploading work is not difficult, it is tedious, boring and inefficient. If the project release version is packaged into the corresponding docker image, we only need to pull the image, create the container and start the container on each application server ( With three lines of super simple commands, Walle and Jenkins can easily and fully automate it).

Let’s figure out how to package the php project into a docker image.

Simple php docker image

Create a basic php web project site1, package it into the image, and use the php built-in web server in the image to provide external services.

# 创建项目
mkdir /src/site1 && cd /src/site1
# 写一个简单的 php 页面
vim index.php
<?php
echo "hello docker";
:wq
 
# 编写项目的 Dockerfile
vim Dockerfile
# 拉取 php-cli 镜像
FROM php:7.2-cli
# copy 项目源文件到镜像
COPY . /apps/site1
# 切换 pwd
WORKDIR /apps/site1
# 执行启动命令 使用 php 内置 web 服务器
CMD ["php", "-S 0.0.0.0:80", "-t ./"]
:wq
 
# 使用 Dockerfile 创建镜像 site1 版本号为 1.0.0
docker build -t php-site1:1.0.0 .
 
# 查看镜像
docker images
 
# 创建容器
docker run -it -d \
-p 8081:80 \
--name php_site1_1.0.0 \
php-site1:1.0.0
 
# 查看活动的容器
docker ps
 
# 访问 php 应用
curl -X GET http://localhost:8081/index.php

Extended installation

php The docker image uses debian as the system by default, which is relatively large. We can use the more compact alpine image instead. Next we install the swoole/redis extension (other commonly used extensions, the official php image has been installed).

vim server.php

<?php
$httpServer = new Swoole\Http\Server("0.0.0.0", 80);
 
$httpServer->set([
    &#39;worker_num&#39;  => 1,
]);
 
$httpServer->on("start", function ($server) {
    echo "Swoole http server is started at http://0.0.0.0:80" . PHP_EOL;
});
 
$httpServer->on("request", function ($request, $response) {
    // 模拟业务耗时 体验下 swoole 的协程并发
    Swoole\Coroutine::sleep(2);
 
    $response->header("Content-Type", "text/plain");
    $response->end("Hello World");
});
 
$httpServer->start();
vim Dockerfile
 
FROM php:7.2-cli-alpine
# 更新下 apk 的源
RUN sed -i &#39;s/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g&#39; /etc/apk/repositories
RUN apk update && apk upgrade
RUN apk add m4 make autoconf gcc g++ linux-headers pcre
RUN pecl install swoole \
    && pecl install redis
RUN docker-php-ext-enable swoole \
    && docker-php-ext-enable redis
COPY . /apps/site2
WORKDIR /apps/site2
ENTRYPOINT ["php", "server.php"]

Packaging image

docker build -t php-site2:1.0.0 .
docker images

Creating a container

# 创建容器
docker run -it -d \
-p 8082:80
--name php_site2_1.0.0
php-site2:1.0.0
 
# 查看容器
docker ps
 
# 并发压测 swoole 的协程模式可实现EventLoop异步非阻塞IO
ab -c 100 -n 1000 http://localhost:8081/

If you want to map the project on the host machine, you can

docker run -it -d \
-p 80:80
-v $PWD:/apps/site2
--name php_site2_1.0.0
php-site2:1.0.0

In this way, the project directory on the host is mounted to the working directory of the container, which is equivalent to using the container as a runtime environment.

php:7.2-apache
php:{PHP_VERSION}-apache，以 Apache + MOD_PHP 模式运行容器。

docker run -it -d \
--name php-mod-alpine \
-p 8083:80 \
-v $PWD:/var/www/html
php:7.2-apache

vim index.php

<?php
echo "hello docker";
:wq
 
curl -X GET http://localhost:8083/index.php
php:7.2-fpm-apline
php:{PHP_VERSION}-fpm

php:{PHP_VERSION}-fpm-apline

For php running in fpm mode, you can choose apline OS

docker run -it -d \
--name php-fpm-alpine \
-p 9000:9000 \
php:7.2-fpm-apline

Recommended learning: "PHP Video tutorial》

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