mirror of https://github.com/docker/docs.git
135 lines
4.1 KiB
Markdown
135 lines
4.1 KiB
Markdown
---
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title: Containerize a PHP application
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linkTitle: Containerize your app
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weight: 10
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keywords: php, containerize, initialize, apache, composer
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description: Learn how to containerize a PHP application.
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aliases:
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- /language/php/containerize/
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---
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## Prerequisites
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* You have installed the latest version of [Docker
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Desktop](/get-started/get-docker.md).
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* You have a [git client](https://git-scm.com/downloads). The examples in this
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section use a command-line based git client, but you can use any client.
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## Overview
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This section walks you through containerizing and running a PHP
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application.
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## Get the sample applications
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In this guide, you will use a pre-built PHP application. The application uses Composer for library dependency management. You'll serve the application via an Apache web server.
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Open a terminal, change directory to a directory that you want to work in, and
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run the following command to clone the repository.
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```console
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$ git clone https://github.com/docker/docker-php-sample
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```
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The sample application is a basic hello world application and an application that increments a counter in a database. In addition, the application uses PHPUnit for testing.
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## Initialize Docker assets
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Now that you have an application, you can use `docker init` to create the
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necessary Docker assets to containerize your application. Inside the
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`docker-php-sample` directory, run the `docker init` command in a terminal.
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`docker init` provides some default configuration, but you'll need to answer a
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few questions about your application. For example, this application uses PHP
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version 8.2. Refer to the following `docker init` example and use the same
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answers for your prompts.
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```console
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$ docker init
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Welcome to the Docker Init CLI!
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This utility will walk you through creating the following files with sensible defaults for your project:
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- .dockerignore
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- Dockerfile
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- compose.yaml
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- README.Docker.md
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Let's get started!
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? What application platform does your project use? PHP with Apache
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? What version of PHP do you want to use? 8.2
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? What's the relative directory (with a leading .) for your app? ./src
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? What local port do you want to use to access your server? 9000
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```
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You should now have the following contents in your `docker-php-sample`
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directory.
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```text
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├── docker-php-sample/
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│ ├── .git/
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│ ├── src/
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│ ├── tests/
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│ ├── .dockerignore
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│ ├── .gitignore
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│ ├── compose.yaml
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│ ├── composer.json
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│ ├── composer.lock
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│ ├── Dockerfile
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│ ├── README.Docker.md
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│ └── README.md
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```
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To learn more about the files that `docker init` added, see the following:
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- [Dockerfile](/reference/dockerfile.md)
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- [.dockerignore](/reference/dockerfile.md#dockerignore-file)
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- [compose.yaml](/reference/compose-file/_index.md)
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## Run the application
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Inside the `docker-php-sample` directory, run the following command in a
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terminal.
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```console
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$ docker compose up --build
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```
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Open a browser and view the application at [http://localhost:9000/hello.php](http://localhost:9000/hello.php). You should see a simple hello world application.
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In the terminal, press `ctrl`+`c` to stop the application.
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### Run the application in the background
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You can run the application detached from the terminal by adding the `-d`
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option. Inside the `docker-php-sample` directory, run the following command
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in a terminal.
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```console
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$ docker compose up --build -d
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```
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Open a browser and view the application at [http://localhost:9000/hello.php](http://localhost:9000/hello.php). You should see a simple hello world application.
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In the terminal, run the following command to stop the application.
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```console
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$ docker compose down
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```
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For more information about Compose commands, see the [Compose CLI
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reference](/reference/cli/docker/compose/_index.md).
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## Summary
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In this section, you learned how you can containerize and run a simple PHP
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application using Docker.
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Related information:
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- [docker init reference](/reference/cli/docker/init.md)
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## Next steps
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In the next section, you'll learn how you can develop your application using
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Docker containers.
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{{< button text="Develop your application" url="develop.md" >}}
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