# syntax = docker/dockerfile:1 # Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile ARG RUBY_VERSION=2.7.6 FROM registry.docker.com/library/ruby:$RUBY_VERSION-slim as base # Rails app lives here WORKDIR /rails # Set production environment ENV RAILS_ENV="production" \ BUNDLE_DEPLOYMENT="1" \ BUNDLE_PATH="/usr/local/bundle" \ BUNDLE_WITHOUT="development" # Throw-away build
![Rails7.1~で生成されるDockerfileを読んでみる](https://cdn-ak-scissors.b.st-hatena.com/image/square/b14966a461ebe7499f877c6ecb8b4d69c97ae74d/height=288;version=1;width=512/https%3A%2F%2Fstorage.googleapis.com%2Fzenn-user-upload%2Favatar%2F8d669f6eb5.jpeg)