chore: Add dev container infrastructure

.devcontainer/Dockerfile

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+FROM mcr.microsoft.com/devcontainers/universal:2

.devcontainer/README.md

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+
+These files in `/.devcontainer` let you use services like GitHub Codespaces to quickly get up and running with The Odin Project
+
+You'll still to do some setup after starting your dev container:
+```bash
+ # Install ruby-3.3.5 for rvm
+rvm install "ruby-3.3.5"
+
+# Remove a tool that will cause build issues
+gem uninstall -i /usr/local/rvm/rubies/ruby-3.3.5/lib/ruby/gems/3.3.0 gem-wrappers
+
+# Install required gems
+bundle install
+
+# Install required JS dependencies
+yarn install
+
+# Prepare .env
+cp env.sample .env
+
+# Manually update .env with postgres username and password; default is "postgres" for both
+# POSTGRES_USERNAME: 'postgres'
+# POSTGRES_PASSWORD: 'postgres
+
+# Install Chrome (for running tests)
+wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb && \
+    sudo apt update && \
+    sudo apt install ./google-chrome-stable_current_amd64.deb -y && \
+    rm ./google-chrome-stable_current_amd64.deb
+
+# Set up your database
+rails db:create
+rails db:environment:set RAILS_ENV=development
+rails db:schema:load
+```
+
+> Note: If you think some of this could be automated, you're probably right. Open a pull request with those changes that can give other engineers a turbo boost!

.devcontainer/devcontainer.json

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+{
+	"dockerComposeFile": "docker-compose.yml",
+	"service": "devcontainer",
+	"workspaceFolder": "/workspaces/${localWorkspaceFolderBasename}",
+	"onCreateCommand": "bash -i .devcontainer/install-dependencies.sh"
+}

.devcontainer/docker-compose.yml

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+services:
+  devcontainer:
+    build: 
+      context: .
+      dockerfile: Dockerfile
+    volumes:
+      - ../..:/workspaces:cached
+    command: sleep infinity
+    environment:
+      POSTGRES_PASSWORD: postgres
+      POSTGRES_USERNAME: postgres
+
+  db:
+    image: postgres:latest
+    restart: unless-stopped
+    volumes:
+      - postgres-data:/var/lib/postgresql/data
+    environment:
+      POSTGRES_PASSWORD: postgres
+      POSTGRES_USER: postgres
+      POSTGRES_DB: postgres
+    network_mode: service:devcontainer
+    depends_on:
+      - devcontainer
+
+  redis:
+    image: redis:latest
+    command: redis-server
+    volumes:
+      - redis:/var/lib/redis
+      - redis-config:/usr/local/etc/redis/redis.conf
+    network_mode: service:devcontainer
+    depends_on:
+      - devcontainer
+
+
+volumes:
+  postgres-data:
+  redis:
+  redis-config:

.devcontainer/install-dependencies.sh

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+# Install and use ruby 3.3.5 as default; our Docker image uses rvm
+rvm install 3.3.5
+rvm use 3.3.5
+
+# Display current ruby version (for logging)
+ruby -v
+
+# Remove tooling that causes build issues
+gem uninstall -i /usr/local/rvm/rubies/ruby-3.3.5/lib/ruby/gems/3.3.0 gem-wrappers
+
+# Install required gems
+bundle install
+
+# Install required JS dependencies
+yarn install
+
+# Prepare .env
+cp env.sample .env
+
+# Install Chrome (for running tests)
+wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb && \
+    sudo apt update && \
+    sudo apt install ./google-chrome-stable_current_amd64.deb -y && \
+    rm ./google-chrome-stable_current_amd64.deb
+
+# Set up your database
+rails db:create
+rails db:environment:set RAILS_ENV=development
+rails db:schema:load
+
+# Remind user how to get started
+echo
+echo To get started you can run your tests by running this command:
+echo
+echo   bin/rspec
+echo
+echo ...or you can run the web site by running this command:
+echo
+echo   bin/dev
+echo