Dockerfile is not working

[MartinMikita]

Application in Dockerfile is not working, after building docker image, beanstalkd_view is not working:

root@ee266c29ff12:/# beanstalkd_view --foreground --no-launch
/usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require': /var/lib/gems/1.8/gems/beaneater-1.0.0/lib/beaneater/connection.rb:176: syntax error, unexpected ':', expecting ')' (SyntaxError)
          transmit("watch #{t}", init: false)
                                      ^
/var/lib/gems/1.8/gems/beaneater-1.0.0/lib/beaneater/connection.rb:180: syntax error, unexpected ':', expecting ')'
...smit("use #{tube_used}", init: false) if @tube_used != 'defa...
                              ^
/var/lib/gems/1.8/gems/beaneater-1.0.0/lib/beaneater/connection.rb:242: syntax error, unexpected $end, expecting kEND
    from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `require_without_backports'
    from /var/lib/gems/1.8/gems/backports-3.6.8/lib/backports/std_lib.rb:9:in `require'
    from /var/lib/gems/1.8/gems/beaneater-1.0.0/lib/beaneater.rb:4
    from /var/lib/gems/1.8/gems/beaneater-1.0.0/lib/beaneater.rb:3:in `each'
    from /var/lib/gems/1.8/gems/beaneater-1.0.0/lib/beaneater.rb:3
    from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
    from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `require_without_backports'
    from /var/lib/gems/1.8/gems/backports-3.6.8/lib/backports/std_lib.rb:9:in `require'
    from /var/lib/gems/1.8/gems/beanstalkd_view-2.0.0/lib/beanstalkd_view.rb:5
    from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
    from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `require'
    from /var/lib/gems/1.8/gems/beanstalkd_view-2.0.0/bin/beanstalkd_view:10
    from /usr/local/bin/beanstalkd_view:23:in `load'
    from /usr/local/bin/beanstalkd_view:23