git clone https://github.com/a2ikm/middleman-blog-test.git
cd middleman-blog-test
bundle install
bundle exec middleman server
and open http://localhost:4567 with your browser.
mkdir my-blog
cd my-blog
echo 2.6.5 > .ruby-version
gem install middleman
middleman init . --template=blog
bundle install
and updated config.rb.