无法在 Docker 映像中安装具有作曲家的依赖项

Question

我试图使用 docker 安装attendize。

当我放这个命令时：

$ docker run --rm -v $(pwd):/app composer/composer install

然后我收到了此错误消息。

Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Your requirements could not be resolved to an installable set of packages.
Problem 1
- symfony/class-loader v3.4.8 requires php ^5.5.9|>=7.0.8 -> your PHP version (7.0.7) does not satisfy that requirement.
- symfony/class-loader v3.4.8 requires php ^5.5.9|>=7.0.8 -> your PHP version (7.0.7) does not satisfy that requirement.
- Installation request for symfony/class-loader v3.4.8 -> satisfiable by symfony/class-loader[v3.4.8].

这是我的composer.json：

{
"name":"attendize/attendize",
"description":"A free and open-source event management and ticket selling application.",
"keywords":[
"event management",
"ticket selling",
"tickets",
"events"
],
"license":"Attribution Assurance License",
"type":"project",
"homepage":"https://www.attendize.com",
"require":{
"laravel/framework":"5.2.*",
"laravelcollective/html":"~5.0",
"milon/barcode":"dev-master",
"iron-io/iron_mq":"2.*",
"intervention/image":"dev-master",
"nitmedia/wkhtml2pdf":"dev-master",
"maatwebsite/excel":"~2.0.0",
"dompdf/dompdf":"dev-master",
"laravel/socialite":"~2.0",
"filp/whoops":"~1.0",
"vinelab/http":"dev-master",
"mews/purifier":"~2.0",
"league/flysystem-aws-s3-v3":"~1.0",
"maxhoffmann/parsedown-laravel":"dev-master",
"omnipay/common":"~2.3",
"omnipay/stripe":"*",
"omnipay/paypal":"*",
"omnipay/bitpay":"dev-master",
"omnipay/coinbase":"dev-master",
"laracasts/utilities":"^2.1",
"predis/predis":"~1.0",
"guzzlehttp/guzzle":"^6.2",
"omnipay/migs":"^2.1",
"mcamara/laravel-localization":"^1.2",
"potsky/laravel-localization-helpers":"2.3.*"
},
"require-dev":{
"phpunit/phpunit":"~4.0",
"phpspec/phpspec":"~2.1",
"fzaninotto/faker":"^1.5",
"symfony/dom-crawler":"~3.0",
"symfony/css-selector":"~3.0",
"doctrine/dbal":"~2.3",
"barryvdh/laravel-ide-helper":"^2.1"
},
"autoload":{
"classmap":[
"database",
"app/Http/Controllers",
"app/Models",
"app/Attendize"
],
"psr-4":{
"App\":"app/",
"Attendize\":"app/Models"
}
},
"autoload-dev":{
"classmap":[
"tests/TestCase.php"
]
},
"scripts":{
"post-install-cmd":[
"php artisan clear-compiled",
"php artisan optimize"
],
"post-update-cmd":[
"php artisan clear-compiled",
"php artisan optimize"
],
"post-create-project-cmd":[
"php -r "copy('.env.example', '.env');"",
"php artisan key:generate"
]
},
"config":{
"preferred-install":"dist"
},
"extra":{
"laravel":{
"dont-discover":[
"potsky/laravel-localization-helpers"
]
}
}
}

我不知道问题是什么，因为我是全新的。 请帮助我 谢谢。

#docker-composer.yml
version: '2'
services:
web:
build:
context: .
dockerfile: Dockerfile-nginx
ports:
- "8080:80"
networks:
- attendizenet
volumes:
- .:/usr/share/nginx/html/attendize
depends_on:
- php
php:
build:
context: .
dockerfile: Dockerfile-php
depends_on:
- db
- maildev
- redis
volumes:
- .:/usr/share/nginx/html/attendize
networks: 
- attendizenet
php-worker:
build:
context: .
dockerfile: Dockerfile-php
depends_on:
- db
- maildev
- redis
volumes:
- .:/usr/share/nginx/html/attendize
command: php artisan queue:work --daemon
networks:
- attendizenet
db:
image: postgres
environment:
- POSTGRES_USER=attendize
- POSTGRES_PASSWORD=attendize
- POSTGRES_DB=attendize
ports:
- "5433:5432"
volumes:
- ./docker/pgdata:/var/lib/postgresql/data
networks:
- attendizenet
maildev:
image: djfarrelly/maildev
ports:
- "1080:80"
networks:
- attendizenet
redis:
image: redis
networks:
- attendizenet
networks:
attendizenet:
driver: bridge

Answer 1

问题是您的 Docker 镜像7.0.7提供的 PHP 版本小于您在composer.json中定义的一个或多个依赖项所需的版本。

要解决此问题，您有多种选择：

• 删除依赖项(否(
• 使用至少提供7.0.8的基本映像，请参阅 https://hub.docker.com/_/php/

如果您分享Dockerfile会很有帮助。

Answer 2

也许删除和修剪composer/composer图像和容器就足够了。然后再次构建它。

似乎有更多最新版本的 PHP 7.0.x 可用。仅此一项就可以满足平台依赖不匹配的问题。

• https://hub.docker.com/r/library/composer/
• https://github.com/composer/docker

..或者，您可以尝试像这样运行install：

$ composer install --ignore-platform-reqs

• 这将忽略不匹配并处理安装过程。这可能足以或可能不足以development.不过，我不建议忽略production的要求(除非您真的知道自己在做什么(。