Add a basic React app with node.js running

Dockerfile

@@ -7,6 +7,7 @@
 
 # Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
 ARG RUBY_VERSION=3.3.9
+ARG NODE_VERSION=22.12.0
 FROM docker.io/library/ruby:$RUBY_VERSION-slim AS base
 
 # Rails app lives here
@@ -26,11 +27,22 @@ ENV RAILS_ENV="production" \
 # Throw-away build stage to reduce size of final image
 FROM base AS build
 
-# Install packages needed to build gems
+# Install packages needed to build gems and Node.js
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential git libpq-dev pkg-config libyaml-dev && \
+    apt-get install --no-install-recommends -y build-essential git libpq-dev pkg-config libyaml-dev curl && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
+# Install Node.js
+ARG NODE_VERSION
+RUN curl -sL https://github.com/nodenv/node-build/archive/master.tar.gz | tar xz -C /tmp/ && \
+    /tmp/node-build-master/bin/node-build "${NODE_VERSION}" /usr/local/node && \
+    rm -rf /tmp/node-build-master
+
+ENV PATH=/usr/local/node/bin:$PATH
+
+# Enable corepack for yarn/pnpm
+RUN corepack enable
+
 # Install application gems
 COPY Gemfile Gemfile.lock ./
 RUN bundle install && \

Gemfile

@@ -33,6 +33,9 @@ gem "jbuilder"
 # Use Redis adapter to run Action Cable in production
 gem "redis", "~> 5.3"
 
+# Use Rack CORS for handling Cross-Origin Resource Sharing (CORS)
+gem "rack-cors"
+
 # Use Kredis to get higher-level data types in Redis [https://github.com/rails/kredis]
 # gem "kredis"
 

Gemfile.lock

@@ -206,6 +206,9 @@ GEM
       nio4r (~> 2.0)
     racc (1.8.1)
     rack (3.2.4)
+    rack-cors (3.0.0)
+      logger
+      rack (>= 3.0.14)
     rack-mini-profiler (4.0.1)
       rack (>= 1.2.0)
     rack-session (2.1.1)
@@ -378,6 +381,7 @@ DEPENDENCIES
   jbuilder
   pg (~> 1.5)
   puma (~> 6.5)
+  rack-cors
   rack-mini-profiler
   rails (~> 7.2)
   redis (~> 5.3)

app/controllers/api/v1/health_controller.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+module Api
+  module V1
+    class HealthController < ApplicationController
+      skip_before_action :verify_authenticity_token
+
+      def index
+        render json: {
+          status: "ok",
+          message: "Rails API is running!",
+          timestamp: Time.current
+        }
+      end
+    end
+  end
+end

compose.yaml

@@ -12,12 +12,26 @@ services:
     env_file:
       - .env
     environment:
-      - HISTFILE=/usr/src/app/log/.bash_history 
+      - HISTFILE=/usr/src/app/log/.bash_history
     depends_on:
       db:
         condition: service_healthy
       redis:
         condition: service_started
+  frontend:
+    build:
+      context: ./
+      dockerfile: development.Dockerfile
+    command: bash -c "cd frontend && npm run dev -- --host 0.0.0.0"
+    volumes:
+      - .:/usr/src/app
+      - node_modules:/usr/src/app/frontend/node_modules
+    ports:
+      - "5173:5173"
+    environment:
+      - VITE_API_URL=http://localhost:3000
+    stdin_open: true
+    tty: true
   db:
     image: postgres:17
     ports:
@@ -40,3 +54,4 @@ volumes:
   pg_data:
   redis_data:
   bundle:
+  node_modules:

config/initializers/cors.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+# Be sure to restart your server when you modify this file.
+
+# Avoid CORS issues when API is called from the frontend app.
+# Handle Cross-Origin Resource Sharing (CORS) in order to accept cross-origin Ajax requests.
+
+# Read more: https://github.com/cyu/rack-cors
+
+Rails.application.config.middleware.insert_before 0, Rack::Cors do
+  allow do
+    origins "localhost:5173", "127.0.0.1:5173"
+
+    resource "*",
+      headers: :any,
+      methods: [ :get, :post, :put, :patch, :delete, :options, :head ],
+      credentials: true
+  end
+end

config/routes.rb

@@ -7,6 +7,13 @@
   # Can be used by load balancers and uptime monitors to verify that the app is live.
   get "up" => "rails/health#show", as: :rails_health_check
 
+  # API routes
+  namespace :api do
+    namespace :v1 do
+      get "health", to: "health#index"
+    end
+  end
+
   resources :articles do
     resources :comments
   end

development.Dockerfile

@@ -2,6 +2,7 @@
 
 # Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
 ARG RUBY_VERSION=3.3.9
+ARG NODE_VERSION=22.12.0
 FROM docker.io/library/ruby:$RUBY_VERSION-slim as base
 
 # OS Level Dependencies
@@ -28,6 +29,17 @@ ENV LANG=C.UTF-8 \
   BUNDLE_JOBS=4 \
   BUNDLE_RETRY=3
 
+# Install Node.js
+ARG NODE_VERSION
+RUN curl -sL https://github.com/nodenv/node-build/archive/master.tar.gz | tar xz -C /tmp/ && \
+    /tmp/node-build-master/bin/node-build "${NODE_VERSION}" /usr/local/node && \
+    rm -rf /tmp/node-build-master
+
+ENV PATH=/usr/local/node/bin:$PATH
+
+# Enable corepack for yarn/pnpm
+RUN corepack enable
+
 WORKDIR /usr/src/app
 
 ENTRYPOINT ["./bin/docker-entrypoint-development"]

frontend/.gitignore

@@ -0,0 +1,24 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?

frontend/README.md

@@ -0,0 +1,73 @@
+# React + TypeScript + Vite
+
+This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules.
+
+Currently, two official plugins are available:
+
+- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Babel](https://babeljs.io/) (or [oxc](https://oxc.rs) when used in [rolldown-vite](https://vite.dev/guide/rolldown)) for Fast Refresh
+- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/) for Fast Refresh
+
+## React Compiler
+
+The React Compiler is currently not compatible with SWC. See [this issue](https://github.com/vitejs/vite-plugin-react/issues/428) for tracking the progress.
+
+## Expanding the ESLint configuration
+
+If you are developing a production application, we recommend updating the configuration to enable type-aware lint rules:
+
+```js
+export default defineConfig([
+  globalIgnores(['dist']),
+  {
+    files: ['**/*.{ts,tsx}'],
+    extends: [
+      // Other configs...
+
+      // Remove tseslint.configs.recommended and replace with this
+      tseslint.configs.recommendedTypeChecked,
+      // Alternatively, use this for stricter rules
+      tseslint.configs.strictTypeChecked,
+      // Optionally, add this for stylistic rules
+      tseslint.configs.stylisticTypeChecked,
+
+      // Other configs...
+    ],
+    languageOptions: {
+      parserOptions: {
+        project: ['./tsconfig.node.json', './tsconfig.app.json'],
+        tsconfigRootDir: import.meta.dirname,
+      },
+      // other options...
+    },
+  },
+])
+```
+
+You can also install [eslint-plugin-react-x](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-x) and [eslint-plugin-react-dom](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-dom) for React-specific lint rules:
+
+```js
+// eslint.config.js
+import reactX from 'eslint-plugin-react-x'
+import reactDom from 'eslint-plugin-react-dom'
+
+export default defineConfig([
+  globalIgnores(['dist']),
+  {
+    files: ['**/*.{ts,tsx}'],
+    extends: [
+      // Other configs...
+      // Enable lint rules for React
+      reactX.configs['recommended-typescript'],
+      // Enable lint rules for React DOM
+      reactDom.configs.recommended,
+    ],
+    languageOptions: {
+      parserOptions: {
+        project: ['./tsconfig.node.json', './tsconfig.app.json'],
+        tsconfigRootDir: import.meta.dirname,
+      },
+      // other options...
+    },
+  },
+])
+```

frontend/eslint.config.js

@@ -0,0 +1,23 @@
+import js from '@eslint/js'
+import globals from 'globals'
+import reactHooks from 'eslint-plugin-react-hooks'
+import reactRefresh from 'eslint-plugin-react-refresh'
+import tseslint from 'typescript-eslint'
+import { defineConfig, globalIgnores } from 'eslint/config'
+
+export default defineConfig([
+  globalIgnores(['dist']),
+  {
+    files: ['**/*.{ts,tsx}'],
+    extends: [
+      js.configs.recommended,
+      tseslint.configs.recommended,
+      reactHooks.configs['recommended-latest'],
+      reactRefresh.configs.vite,
+    ],
+    languageOptions: {
+      ecmaVersion: 2020,
+      globals: globals.browser,
+    },
+  },
+])

frontend/index.html

@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>rails7-on-docker</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>