Dockerfile

# To create an image for specific versions of Ruby and ActiveRecord, run e.g.:

# docker build -t udi278 --build-arg ruby_version=2.7.8 --build-arg activerecord_version=5.2 .
# docker run --name udc278 -dit udi278
# docker exec -it udc278 bash
# docker stop udc278 && docker remove udc278

ARG ruby_version=3.2.2
ARG activerecord_version=7.1
ARG bundler_version=2.4.22

FROM ruby:${ruby_version}-bullseye

ARG ruby_version
ARG activerecord_version
ARG bundler_version

ENV WORKDIR=/app
WORKDIR ${WORKDIR}
RUN apt update && \
  apt upgrade -qy && \
  apt install -qy default-mysql-client postgresql-client less vim && \
  rm -rf /var/lib/apt/lists/*

ENV BUNDLE_GEMFILE="${WORKDIR}/gemfiles/activerecord_${activerecord_version}.gemfile"

RUN gem install -v ${bundler_version} bundler
ADD . ${WORKDIR}
RUN bundle install