Update Ruby to 3.1.0

Author: nickjj

CHANGELOG.md

@@ -25,7 +25,7 @@ Changelog](https://keepachangelog.com/en/1.0.0/).
 
 #### Languages and services
 
-- Update `Ruby` to `3.0.3` and switch to Debian Bullseye Slim
+- Update `Ruby` to `3.1.0` and switch to Debian Bullseye Slim
 - Update `Node` to `16.x`
 - Update `PostgreSQL` to `14.1` and switch to Debian Bullseye Slim
 - Update `Redis` to `6.2.6` and switch to Debian Bullseye Slim

Dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:3.0.3-slim-bullseye AS assets
+FROM ruby:3.1.0-slim-bullseye AS assets
 LABEL maintainer="Nick Janetakis <nick.janetakis@gmail.com>"
 
 WORKDIR /app
@@ -38,7 +38,7 @@ CMD ["bash"]
 
 ###############################################################################
 
-FROM ruby:3.0.3-slim-bullseye AS app
+FROM ruby:3.1.0-slim-bullseye AS app
 LABEL maintainer="Nick Janetakis <nick.janetakis@gmail.com>"
 
 WORKDIR /app

Gemfile

@@ -1,7 +1,7 @@
 source "https://rubygems.org"
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
-ruby "3.0.3"
+ruby "3.1.0"
 
 # Bundle edge Rails instead: gem "rails", github: "rails/rails", branch: "main"
 gem "rails", "~> 7.0.1"

Gemfile.lock

@@ -243,7 +243,7 @@ DEPENDENCIES
   webdrivers
 
 RUBY VERSION
-   ruby 3.0.3p157
+   ruby 3.1.0p0
 
 BUNDLED WITH
-   2.2.32
+   2.3.3

README.md

@@ -14,7 +14,7 @@ practices](https://nickjanetakis.com/blog/best-practices-around-production-ready
 based on building and deploying dozens of assorted Dockerized web apps since
 late 2014.
 
-**This app is using Rails 7.0.1 and Ruby 3.0.3**. The screenshot doesn't get
+**This app is using Rails 7.0.1 and Ruby 3.1.0**. The screenshot doesn't get
 updated every time I bump the versions:
 
 [![Screenshot](.github/docs/screenshot.jpg)](https://github.com/nickjj/docker-rails-example/blob/main/.github/docs/screenshot.jpg?raw=true)