Failure when is build container with GitAction

[igormafra]

The GitAction use like:

Build container for action use: '/runner/_work/_actions/unsplash/comment-on-pr/master/Dockerfile'.

And we have this error bellow:

Step 8/10 : RUN gem install octokit
   ---> Running in 2853c4253eed
  ERROR:  While executing gem ... (Gem::FilePermissionError)
      You don't have write permissions for the /usr/local/bundle directory.
  The command '/bin/sh -c gem install octokit' returned a non-zero code: 1

Can you see this error and help us ?