Update playground to use ruby 7

Author: brunoocasali

playground/Dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:3.1.2-slim
+FROM ruby:3.4-slim
 ENV LANG C.UTF-8
 
 RUN apt-get update -qq && apt-get install -yq --no-install-recommends \
@@ -9,7 +9,8 @@ RUN apt-get update -qq && apt-get install -yq --no-install-recommends \
     telnet \
     nodejs \
     npm \
-    python \
+    python3 \
+    libsqlite3-dev \
   && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 RUN apt-get update -qq && apt-get install -y libpq-dev

playground/Gemfile

@@ -2,7 +2,7 @@ source 'https://rubygems.org'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails', branch: 'main'
-gem 'rails', '~> 6.1.3'
+gem 'rails', '~> 7.1'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3'
 # Use Puma as the app server

playground/config/application.rb

@@ -9,7 +9,7 @@
 module Playground
   class Application < Rails::Application
     # Initialize configuration defaults for originally generated Rails version.
-    config.load_defaults 6.1
+    config.load_defaults 7.1
 
     # Configuration for the application, engines, and railties goes here.
     #