Cannot build the image using Dockerfile

[farshadf]

Hi,

We are trying to build the image using provided Dockerfile, but we encounter this error message.

 > [ 6/12] RUN bundle install --binstubs:
#11 3.563 Fetching gem metadata from https://rubygems.org/............
#11 6.657 Your bundle is locked to mimemagic (0.3.2), but that version could not be found
#11 6.657 in any of the sources listed in your Gemfile. If you haven't changed sources,
#11 6.657 that means the author of mimemagic (0.3.2) has removed it. You'll need to update
#11 6.657 your bundle to a version other than mimemagic (0.3.2) that hasn't been removed
#11 6.657 in order to install.

Would you please look into this issue?

Thank you