我可以在 alpine-linux 中使用 PRY 嗎？

Question

我安裝了 ruby​​ 和 ruby​​-irb

對於 irb， apk add irb-pry是答案

然后

irb
irb(main):00:0>

作品

現在我想讓 PRY 工作。

我安裝了 gem，但后來我得到了：

03:36:00  848c4ae29411 / 
# gem install pry
Successfully installed pry-0.12.0
Parsing documentation for pry-0.12.0
Installing ri documentation for pry-0.12.0
Done installing documentation for pry after 2 seconds
1 gem installed
03:36:11  848c4ae29411 / 
# pry
Traceback (most recent call last):
        16: from /usr/bin/pry:23:in `<main>'
        15: from /usr/bin/pry:23:in `load'
        14: from /usr/lib/ruby/gems/2.5.0/gems/pry-0.12.0/bin/pry:4:in `<top (required)>'
        13: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
        12: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
        11: from /usr/lib/ruby/gems/2.5.0/gems/pry-0.12.0/lib/pry.rb:110:in `<top (required)>'
        10: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
         9: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
         8: from /usr/lib/ruby/gems/2.5.0/gems/pry-0.12.0/lib/pry/commands.rb:4:in `<top (required)>'
         7: from /usr/lib/ruby/gems/2.5.0/gems/pry-0.12.0/lib/pry/commands.rb:4:in `each'
         6: from /usr/lib/ruby/gems/2.5.0/gems/pry-0.12.0/lib/pry/commands.rb:5:in `block in <top (required)>'
         5: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
         4: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
         3: from /usr/lib/ruby/gems/2.5.0/gems/pry-0.12.0/lib/pry/commands/gem_stats.rb:1:in `<top (required)>'
         2: from /usr/lib/ruby/gems/2.5.0/gems/pry-0.12.0/lib/pry/commands/gem_stats.rb:2:in `<class:GemStat>'
         1: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
/usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require': cannot load such file -- json (LoadError)

Answer 1

你應該能夠，

gem install pry

然后

pry

獲取交互式 Pry 會話。

Answer 2

Alpine 是一個有意的准 Linux 發行版，這意味着您必須在允許gem安裝軟件包之前自己安裝庫和程序。

這對我pry可以從 Alpine Docker 映像中運行 pry：

apk update
apk add ruby-dev make gcc libc-dev

gem install json pry --no-document