Ruby on rails docker生成错误Gem:：Ext:：BuildError:错误：无法为mimemagic-0.3.9生成Gem本机扩展_Ruby On Rails_Docker_Dockerfile_Ruby On Rails 5

Ruby on rails docker生成错误Gem:：Ext:：BuildError:错误：无法为mimemagic-0.3.9生成Gem本机扩展

ruby-on-rails docker

Ruby on rails docker生成错误Gem:：Ext:：BuildError:错误：无法为mimemagic-0.3.9生成Gem本机扩展,ruby-on-rails,docker,dockerfile,ruby-on-rails-5,Ruby On Rails,Docker,Dockerfile,Ruby On Rails 5,我必须在本地计算机上构建docker映像，以验证它是否是构建映像，但在本地计算机上构建docker映像时，我面临这个问题 Installing mime magic 0.3.9 with native extensions Gem::Ext::BuildError: ERROR: Failed to build gem native extension. current directory: /usr/local/bundle/gems/mimemagic-0.3.9/ext

我必须在本地计算机上构建docker映像，以验证它是否是构建映像，但在本地计算机上构建docker映像时，我面临这个问题

 Installing mime magic 0.3.9 with native extensions
    Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /usr/local/bundle/gems/mimemagic-0.3.9/ext/mimemagic
/usr/local/bin/ruby -I/usr/local/lib/ruby/2.7.0/rubygems -rrubygems
/usr/local/lib/ruby/gems/2.7.0/gems/rake-13.0.1/exe/rake
RUBYARCHDIR\=/usr/local/bundle/extensions/x86_64-linux/2.7.0/mimemagic-0.3.9
RUBYLIBDIR\=/usr/local/bundle/extensions/x86_64-linux/2.7.0/mimemagic-0.3.9
rake aborted!
Could not find MIME type database in the following locations:
["/usr/local/share/mime/packages/freedesktop.org.xml",
"/opt/homebrew/share/mime/packages/freedesktop.org.xml",
"/usr/share/mime/packages/freedesktop.org.xml"]


/usr/local/bundle/gems/mimemagic-0.3.9/ext/mimemagic/Rakefile:25:in `block in
<top (required)>'
Tasks: TOP => default
(See full trace by running task with --trace)

rake failed, exit code 1

Gem files will remain installed in /usr/local/bundle/gems/mimemagic-0.3.9 for
inspection.
Results logged to
/usr/local/bundle/extensions/x86_64-linux/2.7.0/mimemagic-0.3.9/gem_make.out

An error occurred while installing mimemagic (0.3.9), and Bundler cannot
continue.
Make sure that `gem install mimemagic -v '0.3.9' --source
'https://rubygems.org/'` succeeds before bundling.

安装带有本机扩展的mime magic 0.3.9
Gem:：Ext:：BuildError:错误：无法生成Gem本机扩展。
当前目录：/usr/local/bundle/gems/mimemagic-0.3.9/ext/mimemagic
/usr/local/bin/ruby-I/usr/local/lib/ruby/2.7.0/rubygems-rrubygems
/usr/local/lib/ruby/gems/2.7.0/gems/rake-13.0.1/exe/rake
RUBYARCHDIR\=/usr/local/bundle/extensions/x86_64-linux/2.7.0/mimemagic-0.3.9
RUBYLIBDIR\=/usr/local/bundle/extensions/x86_64-linux/2.7.0/mimemagic-0.3.9
雷克流产了！
在以下位置找不到MIME类型数据库：
[“/usr/local/share/mime/packages/freedesktop.org.xml”，
“/opt/homebrew/share/mime/packages/freedesktop.org.xml”，
“/usr/share/mime/packages/freedesktop.org.xml”]
/usr/local/bundle/gems/mimemagic-0.3.9/ext/mimemagic/Rakefile:25:in`block in`
'
任务：TOP=>default
（通过使用--trace运行任务查看完整跟踪）
rake失败，退出代码1
Gem文件将继续安装在/usr/local/bundle/gems/mimemagic-0.3.9中，以便
检查。
结果记录到
/usr/local/bundle/extensions/x86_64-linux/2.7.0/mimemagic-0.3.9/gem_make.out
安装mimemagic（0.3.9）时出错，Bundler无法启动
继续。
确保'gem install mimemagic-v'0.3.9'--源代码
'https://rubygems.org/“`捆绑前成功。

如果您正在使用macOS，请尝试以下操作

 brew install shared-mime-info
 bundle update mimemagic

并尝试捆绑您的gem文件

修改

Dockerfile

以安装

共享mime信息

包。例如，在基于Debian的图像上：

运行apt-get-update&&apt-get-install-y共享mime信息

如果它仍然无法工作，那么您可能需要更新

mimemagic

gem。在主机上，在Rails应用程序的

Gemfile

Gemfile.lock

中更新

mimemagic

。您可能需要首先安装

共享mime信息

：如果主机是macOS，您可能需要运行

brew安装共享mime信息

；如果主机是Ubuntu，您可能需要运行

apt-get-install-shared-mime-info

。然后跑

bundle更新mimemagic

如果您的

Dockerfile

从repo下载Rails应用程序，请先将更改推送到该repo。或者，为了进行测试，将

Dockerfile

修改为从主机复制到Rails应用程序中