devcontainer lisäys

.devcontainer/devcontainer.json

@@ -0,0 +1,24 @@
+{
+  "name": "React Vite TypeScript",
+  "image": "mcr.microsoft.com/devcontainers/typescript-node:22",
+  "features": {
+    "ghcr.io/devcontainers/features/node:1": {}
+  },
+  "customizations": {
+    "vscode": {
+      "settings": {
+        "terminal.integrated.shell.linux": "/bin/bash",
+        "typescript.preferences.includePackageJsonAutoImports": "auto",
+        "editor.formatOnSave": true,
+        "editor.defaultFormatter": "esbenp.prettier-vscode"
+      },
+      "extensions": [
+        "esbenp.prettier-vscode",
+        "dbaeumer.vscode-eslint",
+        "ms-vscode.vscode-typescript-next"
+      ]
+    }
+  },
+  "postCreateCommand": "npm install",
+  "postStartCommand": "npm run dev"
+}