Dockerfile

# ./Dockerfile
FROM ruby:3.0.1 as base

# set some default ENV values for the image
ENV RAILS_LOG_TO_STDOUT 1
ENV RAILS_SERVE_STATIC_FILES 1
ENV EXECJS_RUNTIME Node
# supress warnings until upgrade to rails 6
ENV RUBYOPT '-W0'

# set the app directory var
ENV APP_HOME /home/app

WORKDIR $APP_HOME
ARG NODE_MAJOR_VERSION=20
RUN curl -sL https://deb.nodesource.com/setup_${NODE_MAJOR_VERSION}.x | bash -
RUN apt-get update -qq
RUN apt-get install -y --no-install-recommends \
  build-essential \
  dumb-init \
  git \
  nodejs \
  openssh-client \
  unzip \
  zlib1g-dev \
  default-mysql-client \
  redis-tools

# install yarn, required by webpacker
ARG YARN_VERSION=1.22.4
RUN npm install -g yarn@${YARN_VERSION}

# install bundler
ARG BUNDLER_VERSION=2.5.3
RUN gem install bundler -v "${BUNDLER_VERSION}"
RUN gem install annotate
RUN bundle config set force_ruby_platform true

COPY . $APP_HOME

RUN gem build rails_base