使用docker并尝试构建图像，但由于nokogiri gem问题，我在捆绑时遇到上述错误
我的Docker文件是
RUN apt update
RUN apt install -y ruby
RUN gem install bundler
RUN cd /usr/src/app
WORKDIR /web
ADD Gemfile /web/
RUN bundle
但是，当我在结尾时RUN bundle ^我得到以下错误：
...
Fetching mini_portile2 2.4.0
Installing mini_portile2 2.4.0
Fetching nokogiri 1.10.2
Installing nokogiri 1.10.2 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
current directory: /var/lib/gems/2.5.0/gems/nokogiri-1.10.2/ext/nokogiri
/usr/bin/ruby2.5 -r ./siteconf20190414-8-1rrc2i8.rb extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h
extconf failed, exit code 1
Gem files will remain installed in /var/lib/gems/2.5.0/gems/nokogiri-1.10.2 for
inspection.
Results logged to
/var/lib/gems/2.5.0/extensions/x86_64-linux/2.5.0/nokogiri-1.10.2/gem_make.out
An error occurred while installing nokogiri (1.10.2), and Bundler cannot
continue.
Make sure that `gem install nokogiri -v '1.10.2' --source
'http://rubygems.org/'` succeeds before bundling.
In Gemfile:
capybara was resolved to 3.16.2, which depends on
xpath was resolved to 3.2.0, which depends on
nokogiri
The command '/bin/sh -c bundle' returned a non-zero code: 5
将以下行添加到Dockerfile，它将处理依赖项
RUN apt install -y build-essential patch ruby-dev zlib1g-dev liblzma-dev
就在RUN bundle命令之前
然后再次运行构建
docker build -t dock .
...
Fetching nokogiri 1.10.2
Installing nokogiri 1.10.2 with native extensions
Fetching rack 2.0.7
Installing rack 2.0.7
...
Bundle complete! 7 Gemfile dependencies, 33 gems now installed.
Use `bundle info [gemname]` to see where a bundled gem is installed.
Removing intermediate container 146ce309d0a5
---> cd36c7c1e577
Successfully built cd36c7c1e577
Successfully tagged dock:latest
...
感谢https://nokogiri.org/tutorials/installing_nokogiri.html的发现。