如何安装jekyll到Docker镜像？
我想生成一个具有命令jekyll可用的docker图像。
我生成了以下内容的Dockerfile ：
# https://hub.docker.com/_/ruby/ FROM ruby:slim RUN gem install jekyll
不幸的是抛出一个错误：
ERROR: Error installing jekyll: ERROR: Failed to build gem native extension. current directory: /usr/local/bundle/gems/ffi-1.9.10/ext/ffi_c /usr/local/bin/ruby -r ./siteconf20160615-7-12pthrg.rb extconf.rb checking for ffi.h... *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. Provided configuration options: --with-opt-dir --without-opt-dir --with-opt-include --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=/usr/local/bin/$(RUBY_BASE_NAME) --with-ffi_c-dir --without-ffi_c-dir --with-ffi_c-include --without-ffi_c-include=${ffi_c-dir}/include --with-ffi_c-lib --without-ffi_c-lib=${ffi_c-dir}/lib --with-libffi-config --without-libffi-config --with-pkg-config --without-pkg-config /usr/local/lib/ruby/2.3.0/mkmf.rb:456:in `try_do': The compiler failed to generate an executable file. (RuntimeError) You have to install development tools first. from /usr/local/lib/ruby/2.3.0/mkmf.rb:587:in `try_cpp' from /usr/local/lib/ruby/2.3.0/mkmf.rb:1091:in `block in have_header' from /usr/local/lib/ruby/2.3.0/mkmf.rb:942:in `block in checking_for' from /usr/local/lib/ruby/2.3.0/mkmf.rb:350:in `block (2 levels) in postpone' from /usr/local/lib/ruby/2.3.0/mkmf.rb:320:in `open' from /usr/local/lib/ruby/2.3.0/mkmf.rb:350:in `block in postpone' from /usr/local/lib/ruby/2.3.0/mkmf.rb:320:in `open' from /usr/local/lib/ruby/2.3.0/mkmf.rb:346:in `postpone' from /usr/local/lib/ruby/2.3.0/mkmf.rb:941:in `checking_for' from /usr/local/lib/ruby/2.3.0/mkmf.rb:1090:in `have_header' from extconf.rb:16:in `<main>' To see why this extension failed to compile, please check the mkmf.log which can be found here: /usr/local/bundle/extensions/x86_64-linux/2.3.0-static/ffi-1.9.10/mkmf.log extconf failed, exit code 1 Gem files will remain installed in /usr/local/bundle/gems/ffi-1.9.10 for inspection. Results logged to /usr/local/bundle/extensions/x86_64-linux/2.3.0-static/ffi-1.9.10/gem_make.out
我究竟做错了什么？
为了诊断问题，您可以跳到容器中，深入了解导致问题的原因。
$ docker run -ti --rm ruby:slim /bin/bash root@bda37983a585:/# gem install jekyll # ...
另外总是有jekyll泊坞窗图片： https ： //hub.docker.com/u/jekyll/
祝你好运！
在使用Jekyll之前，您需要添加一些要求到您的DockerFile。
- ruby
- RubyGems的
- 的NodeJS
- Python 2.7
所以，你的DockerFile应该是这样的：
FROM ruby:2.1 MAINTAINER nobody@test.com RUN apt-get update \ && apt-get install -y \ node \ python-pygments \ && apt-get clean \ && rm -rf /var/lib/apt/lists/ RUN gem install \ github-pages \ jekyll \ jekyll-redirect-from \ kramdown \ rdiscount \ rouge VOLUME /src EXPOSE 4000 WORKDIR /src ENTRYPOINT ["jekyll"]