Rails new fails to create all of the content…

I recently deployed a Rails app on a CentOS 8 container and was surprised to see that the ‘rails new’ command did not create the entire application directory structure that I would expect, ie:

[root@607ebc931c48 app]# rails _5.2.3_ new centos_app_2
      create
      create  README.md
      create  Rakefile
      create  .ruby-version
      create  config.ru
      create  .gitignore
      create  Gemfile
         run  git init from "."

I didn’t know that git was a requirement now for rails apps, so the issue was resolved by installing the git client.

# dnf install -y git

To get a rails application created using a CentOS 8 docker container, use the following steps. This will assume rails 5.2.3 and ruby 2.6.3:

docker run -i -t --rm -v ${PWD}:/usr/src/app centos:8 bash
dnf install curl git gnupg2 which -y
gpg2 --keyserver hkp://pool.sks-keyservers.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
curl -sSL https://get.rvm.io | bash -s stable
source /etc/profile.d/rvm.sh
rvm requirements
rvm install 2.6.3
gem install rails -v 5.2.3
rails _5.2.3_ new centos_app

Note that the container actually takes quite a bit to build, so making an image would be more useful as subsequent rails commands could be run more easily.