總是報同樣的錯誤，請教如何解決
<code>rd@rd-G31M-ES2C:~/www/laravel-dev$ composer install
Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
- Installing phpdocumentor/reflection-docblock (2.0.4)
Downloading: Failed
Downloading: Failed
Downloading: Failed
Failed to download phpdocumentor/reflection-docblock from dist: The "https://api.github.com/repos/phpDocumentor/ReflectionDocBlock/zipball/d68dbdc53dc358a816f00b300704702b2eaff7b8" file could not be downloaded: php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution
failed to open stream: php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution
Now trying to download from source
- Installing phpdocumentor/reflection-docblock (2.0.4)
Cloning d68dbdc53dc358a816f00b300704702b2eaff7b8
[RuntimeException]
Failed to clone https://github.com/phpDocumentor/ReflectionDocBlock.git via https, ssh protocols, aborting.
- https://github.com/phpDocumentor/ReflectionDocBlock.git
Cloning into '/home/rd/www/laravel-dev/vendor/phpdocumentor/reflection-docblock'...
fatal: unable to access 'https://github.com/phpDocumentor/ReflectionDocBlock.git/': Could not resolve host: github.
com
- git@github.com:phpDocumentor/ReflectionDocBlock.git
Cloning into '/home/rd/www/laravel-dev/vendor/phpdocumentor/reflection-docblock'...
ssh: Could not resolve hostname github.com: Temporary failure in name resolution
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
</code><code>The "https://api.github.com/repos/phpDocumentor/ReflectionDocBlock/zipball/d68dbdc53dc358a816f00b300704702b2eaff7b8" file could not be downloaded: php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution failed to open stream: php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution </code>
這個包我瀏覽器可以直接下載下來的，不知道為什麼composer就是死活下不下來
