update devcontainer to something which will run on ARM machines

.devcontainer/devcontainer.json

@@ -1 +1,9 @@
-{"image":"mcr.microsoft.com/devcontainers/universal:2"}
+{	
+	"image": "mcr.microsoft.com/devcontainers/base:jammy",
+	"features": {
+		"ghcr.io/devcontainers/features/python:1": {},
+		"ghcr.io/devcontainers-contrib/features/hatch:2": {},
+		"ghcr.io/va-h/devcontainers-features/uv:1": {}
+	},
+	"postCreateCommand": "hatch env create"
+}

.github/dependabot.yml

@@ -0,0 +1,12 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for more information:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+# https://containers.dev/guide/dependabot
+
+version: 2
+updates:
+ - package-ecosystem: "devcontainers"
+   directory: "/"
+   schedule:
+     interval: weekly