需要身份验证(packagist.org) Laravel安装

Question

我正在使用Ubuntu 16.04并尝试安装Laravel (任何版本)。实际上，我从GitHub克隆了Laravel项目(https://github.com/laravel/laravel)，在克隆之后，我正在运行以下命令：

root:/var/www/html/laravel$ composer install
Loading composer repositories with package information
Updating dependencies (including require-dev)
Authentication required (packagist.org): 
  Username: 

这就是我面临的问题，我不知道我必须提供什么用户名，也不知道为什么要进行身份验证。如果我运行composer diagnose，我会得到这样的输出：

composer diagnose
Checking composer.json: OK
Checking platform settings: OK
Checking git settings: OK
Checking http connectivity to packagist: Authentication required    (packagist.org):
  Username:

有什么建议吗?有人能告诉我这里遗漏了什么吗？

Answer 1

请运行composer config --global repo.packagist composer https://packagist.org，然后重试。这应该阻止它使用http协议，并强制https，这可能会修复它的情况下，你有一个坏的代理的方式。

Answer 2

在我的例子中，解决了如下问题：

$ composer diagnose

Checking composer.json: OK
Checking platform settings: OK
Checking git settings: OK
Checking http connectivity to packagist: OK
Checking https connectivity to packagist: OK
Checking github.com rate limit: OK
Checking disk free space: OK
Checking pubkeys: FAIL
Missing pubkey for tags verification
Missing pubkey for dev verification
Run composer self-update --update-keys to set them up
Checking composer version: WARNING
You are not running the latest stable version, run `composer self-update` to update (1.6.3 => 1.7.2)
Composer version: 1.6.3
PHP version: 7.2.8
PHP binary path: /usr/local/Cellar/php/7.2.8/bin/php

我跑了

$ composer self-update --update-keys

Open https://composer.github.io/pubkeys.html to find the latest keys
Enter Dev / Snapshot Public Key (including lines with -----): 
[copy and paste the dev pub key]

Enter Tags Public Key (including lines with -----):
[copy and paste the tags pub key]

然后，我又跑了

$ composer self-update

但是，在安装程序包的过程中，仍然会显示：

Authentication required (repo.packagist.org):
  Username:

在为我的packagist.org帐户提供我的用户名和密码并将我的凭据存储在/Users/xxx/.composer/auth.json中之后，问题就解决了。