chore: Update Docker dev setup

extra/Dockerfile

@@ -1,5 +1,5 @@
-ARG RUBY_VERSION=3
-FROM ruby:${RUBY_VERSION}
+ARG RUBY_IMAGE=ruby:3
+FROM ${RUBY_IMAGE}
 
 ARG UID
 
@@ -8,19 +8,14 @@ ENV LANG=C.UTF-8
 ENV RAILS_ENV=development
 
 RUN apt-get update -qq
-RUN DEBIAN_FRONTEND=noninteractive apt-get install -yqq --no-install-recommends build-essential chromium libyaml-dev
+RUN DEBIAN_FRONTEND=noninteractive apt-get install -yqq --no-install-recommends build-essential chromium libyaml-dev nano
 
 RUN gem install bundler
 RUN echo 'gem: --no-document' > /etc/gemrc
 
-COPY . /app
-
-RUN mkdir -p /home/app
 RUN useradd -u ${UID} --shell /bin/bash app 
+RUN mkdir -p /home/app && chown -R app:app /home/app
 RUN chown -R app /usr/local/bundle 
-RUN chown -R app:app /home/app && chown -R app:app /app
 
 USER ${UID}
-
-WORKDIR /app
-RUN bundle update
+COPY . /app