chore: update devcontaner.json

.devcontainer/devcontainer.json

@@ -3,20 +3,18 @@
 {
 	"name": "Ruby",
 	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
-	"image": "mcr.microsoft.com/devcontainers/ruby:1-3.2-bullseye"
-
+	// "image": "mcr.microsoft.com/devcontainers/ruby:1-3.2-bullseye"
+	"build": {
+		"dockerfile": "Dockerfile"
+	}
 	// 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"
-}
+}