.

.devcontainer/devcontainer.json

@@ -3,32 +3,33 @@
 {
   "name": "Ubuntu",
   "build": {
-    "dockerfile": "../Dockerfile"
+    "dockerfile": "mcr.microsoft.com/devcontainers/java:17"
   },
 	"customizations": {
 		"vscode": {
 			"extensions": [
-				// "scalameta.metals",
-				// "usernamehw.errorlens",
-				// "vscjava.vscode-java-pack",
-				// "github.copilot",
-				// "github.copilot-chat",
-				// "github.vscode-github-actions",
-				// "github.vscode-pull-request-github",
-				// "eamodio.gitlens",
-				// "ms-vscode-remote.remote-containers",
-				// "github.vscode-pull-request-github"
+				"scalameta.metals",
+				"usernamehw.errorlens",
+				"vscjava.vscode-java-pack",
+				"github.copilot",
+				"github.copilot-chat",
+				"github.vscode-github-actions",
+				"github.vscode-pull-request-github",
+				"eamodio.gitlens",
+				"ms-vscode-remote.remote-containers",
+				"github.vscode-pull-request-github"
 			]
 		}
   },
 
   // // Features to add to the dev container. More info: https://containers.dev/features.
-  // "features": {
-  //   // "ghcr.io/devcontainers/features/java:1": {
-  //   //   "version": 21
-  //   // }
+  "features": {
+    "ghcr.io/devcontainers/features/java:1": {
+      "version": 21
+    },
+    "./features/mill": {}
   //   //, "ghcr.io/devcontainers-contrib/features/scalacli-sdkman:2": {}
-  // },
+  },
 
   // // Use 'forwardPorts' to make a list of ports inside the container available locally.
   // "forwardPorts": [],

.devcontainer/features/mill/feature.json

@@ -0,0 +1,8 @@
+{
+  "id": "mill",
+  "version": "1.0.0",
+  "name": "Mill Build Tool",
+  "description": "Installs Mill, a Scala build tool.",
+  "installsAfter": [],
+  "options": {}
+}

.devcontainer/features/mill/install.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+set -e
+
+# Install Mill
+$ curl -L -o /usr/local/bin/mill https://raw.githubusercontent.com/lefou/millw/0.4.11/millw > mill && chmod +x /usr/local/bin/mill
+
+# Verify installation
+mill version