murat.ustuntas PRO said over 2 years ago on Docker on Rails 7 :
Hi,
I could not change the Dockerfile.dev. It is as in the source file. 

ARG RUBY_VERSION
FROM ruby:$RUBY_VERSION

RUN apk add --no-cache --update build-base \
  bash \
  git \
  postgresql-dev \
  nodejs \
  yarn \
  imagemagick \
  vips \
  tzdata \
  && rm -rf /var/cache/apk/*

RUN mkdir -p /app
WORKDIR /app

COPY Gemfile Gemfile.lock ./
COPY package.json yarn.lock ./

RUN gem update --system
RUN bundle install -j $(nproc)
RUN yarn install