Upgrade VS Code extension to Ruby LSP (#162)

.devcontainer/devcontainer.json

@@ -4,7 +4,7 @@
 	"name": "Ruby",
 	"build": {
 		"dockerfile": "Dockerfile",
-		"args": { 
+		"args": {
 			// Update 'VARIANT' to pick a Ruby version: 3, 3.0, 2, 2.7, 2.6
 			// Append -bullseye or -buster to pin to an OS version.
 			// Use -bullseye variants on local on arm64/Apple Silicon.
@@ -14,14 +14,17 @@
 		}
 	},
 
-	// Set *default* container specific settings.json values on container create.
-	"settings": {},
+	// Configure tool-specific properties.
+	"customizations": {
+		// Configure properties specific to VS Code.
+		"vscode": {
+			// Add the IDs of extensions you want installed when the container is created.
+			"extensions": [
+				"Shopify.ruby-lsp"
+			]
+		}
+	},
 
-	// Add the IDs of extensions you want installed when the container is created.
-	"extensions": [
-		"rebornix.Ruby"
-	],
-
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.
 	// "forwardPorts": [],