Build failed in ubuntu 18.04

[DmitryBochkarev]

Hello! Thank you for this project. I have trouble building this gem.
Build with docker failing with the following scenario:

$ cat Dockerfile
FROM ubuntu:18.04

RUN apt-get update && apt-get install -y ruby-dev bundler

RUN gem install http -v4.2.0

$ docker build .
...

Successfully installed ffi-compiler-1.0.1
Building native extensions. This could take a while...
ERROR:  Error installing http:
        ERROR: Failed to build gem native extension.

    current directory: /var/lib/gems/2.5.0/gems/http-parser-1.2.1/ext
/usr/bin/ruby2.5 -rrubygems /usr/share/rubygems-integration/all/gems/rake-12.3.1/exe/rake RU
BYARCHDIR=/var/lib/gems/2.5.0/extensions/x86_64-linux/2.5.0/http-parser-1.2.1 RUBYLIBDIR=/va
r/lib/gems/2.5.0/extensions/x86_64-linux/2.5.0/http-parser-1.2.1
/usr/bin/ruby2.5: No such file or directory -- /usr/share/rubygems-integration/all/gems/rake
-12.3.1/exe/rake (LoadError)

rake failed, exit code 1

Gem files will remain installed in /var/lib/gems/2.5.0/gems/http-parser-1.2.1 for inspection
.
Results logged to /var/lib/gems/2.5.0/extensions/x86_64-linux/2.5.0/http-parser-1.2.1/gem_ma
ke.out

$ docker run --rm -it ubuntu:18.04 bash
root@179ab131b3be:/# apt-get update && apt-get install -y ruby-dev bundler

...

root@179ab131b3be:/# gem install http-parser -v1.2.1
Fetching: ffi-1.11.1.gem (100%)
Building native extensions. This could take a while...
Successfully installed ffi-1.11.1
Fetching: ffi-compiler-1.0.1.gem (100%)
Successfully installed ffi-compiler-1.0.1
Fetching: http-parser-1.2.1.gem (100%)
Building native extensions. This could take a while...
ERROR:  Error installing http-parser:
        ERROR: Failed to build gem native extension.

    current directory: /var/lib/gems/2.5.0/gems/http-parser-1.2.1/ext
/usr/bin/ruby2.5 -rrubygems /usr/share/rubygems-integration/all/gems/rake-12.3.1/exe/rake RUBYARCHDIR=/var/lib/gems/2.5.0/extensions/x86_64-linux/2.5.0/http-parser-1.2.1 RUBYLIBDIR=/var/lib/gems/2.5.0/extensions/x86_64-linux/2.5.0/http-parser-1.2.1
/usr/bin/ruby2.5: No such file or directory -- /usr/share/rubygems-integration/all/gems/rake-12.3.1/exe/rake (LoadError)

rake failed, exit code 1

Gem files will remain installed in /var/lib/gems/2.5.0/gems/http-parser-1.2.1 for inspection.
Results logged to /var/lib/gems/2.5.0/extensions/x86_64-linux/2.5.0/http-parser-1.2.1/gem_make.out

root@179ab131b3be:/# cat /var/lib/gems/2.5.0/extensions/x86_64-linux/2.5.0/http-parser-1.2.1/gem_make.out
current directory: /var/lib/gems/2.5.0/gems/http-parser-1.2.1/ext
/usr/bin/ruby2.5 -rrubygems /usr/share/rubygems-integration/all/gems/rake-12.3.1/exe/rake RUBYARCHDIR=/var/lib/gems/2.5.0/extensions/x86_64-linux/2.5.0/http-parser-1.2.1 RUBYLIBDIR=/var/lib/gems/2.5.0/extensions/x86_64-linux/2.5.0/http-parser-1.2.1
/usr/bin/ruby2.5: No such file or directory -- /usr/share/rubygems-integration/all/gems/rake-12.3.1/exe/rake (LoadError)

rake failed, exit code 1

[ixti]

It's an Ubuntu gems packaging issue. See httprb/http#572 for details.