diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 9d42d67..931c941 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -1,22 +1,20 @@
 // 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",
+	"name": "Lennarb",
 	// 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"
-}
+}
\ No newline at end of file
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..19a60d8
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,6 @@
+# Released under the MIT License.
+# Copyright, 2023, by Aristóteles Coutinho.
+
+FROM mcr.microsoft.com/devcontainers/base:ubuntu
+
+RUN apt-get update
\ No newline at end of file