I am trying to dockerize a rails application and I get this error Your Ruby version is 3.0.7, but your Gemfile specified 3.1.2.

FROM ruby:3.0-bullseye as base

RUN apt-get update -qq && apt-get install -y build-essential apt-utils libpq-dev nodejs

WORKDIR /docker/app

RUN gem install bundler

COPY Gemfile* ./

RUN bundle install

ADD . /docker/app

ARG DEFAULT_PORT 3000

EXPOSE ${DEFAULT_PORT}

CMD ["bin/rails server"] # you can also write like this.

Error
Your Ruby version is 3.0.7, but your Gemfile specified 3.1.2