Add devcontainer config

Author: rafaelfranca

.devcontainer/devcontainer.json

@@ -0,0 +1,25 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/ruby
+{
+	"name": "Ruby Style Guide",
+	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+	"image": "ghcr.io/rails/devcontainer/images/ruby:3.4.1",
+	"features": {
+		"ghcr.io/devcontainers/features/github-cli:1": {}
+	}
+
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	// "postCreateCommand": "ruby --version",
+
+	// Configure tool-specific properties.
+	// "customizations": {},
+
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
+}

.ruby-version

@@ -1 +1 @@
-3.3.0
+3.4.1

Gemfile.lock

@@ -59,4 +59,4 @@ DEPENDENCIES
   rubocop-shopify!
 
 BUNDLED WITH
-   2.5.3
+   2.6.3