It may not need all of this - I grabbed the details from the official ruby repo, but this addresses the following error
Step 5 : RUN gem install --no-rdoc --no-ri jekyll ---> Running in 3b0d5f15ea8d Building native extensions. This could take a while... ERROR: Error installing jekyll: jekyll requires Ruby version >= 2.0.0. The command '/bin/sh -c gem install --no-rdoc --no-ri jekyll' returned a non-zero code: 1
It may not need all of this - I grabbed the details from the official ruby repo, but this addresses the following error
Step 5 : RUN gem install --no-rdoc --no-ri jekyll ---> Running in 3b0d5f15ea8d Building native extensions. This could take a while... ERROR: Error installing jekyll: jekyll requires Ruby version >= 2.0.0. The command '/bin/sh -c gem install --no-rdoc --no-ri jekyll' returned a non-zero code: 1