Add devcontainer config (#861)

Closes #853

---------

Co-authored-by: Aram Akhavan <github@aram.nubmail.ca>
Co-authored-by: Aram Akhavan <1147328+kaysond@users.noreply.github.com>

.devcontainer/docker-rootless/devcontainer.json

@@ -0,0 +1,30 @@
+{
+  "name": "Scrutiny Dev (rootless docker)",
+  "dockerComposeFile": "../docker-compose.yml",
+  "service": "app",
+  "workspaceFolder": "/workspaces/scrutiny",
+
+  "features": {
+    "ghcr.io/devcontainers/features/go:1": "1.25",
+    "ghcr.io/devcontainers/features/node:1": "lts"
+  },
+
+  "onCreateCommand": "sudo apt-get update && sudo apt-get install -y smartmontools iputils-ping chromium-browser",
+
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "golang.go",
+        "dbaeumer.vscode-eslint",
+        "esbenp.prettier-vscode"
+      ]
+    }
+  },
+
+  "forwardPorts": [8080, 8086],
+
+  "postCreateCommand": "bash .devcontainer/setup.sh",
+  "remoteUser": "root",
+  "containerUser": "root",
+  "updateRemoteUserUID": false
+}