Refactor devcontainer.json structure and commands

Author: critesjosh

.devcontainer/devcontainer.json

@@ -3,14 +3,13 @@
     "context": ".",
     "dockerfile": "Dockerfile"
   },
-  "features": { "ghcr.io/devcontainers/features/docker-in-docker:2": {} },
-    "postCreateCommand": "yarn && curl -fsSL https://install.aztec.network/4.0.0-nightly.20260204 | VERSION=4.0.0-nightly.20260204 NON_INTERACTIVE=1 BIN_PATH=/usr/local/bin bash -s",  "customizations": {
+  "postCreateCommand": "yarn && curl -fsSL https://install.aztec.network/4.0.0-nightly.20260204 | VERSION=4.0.0-nightly.20260204 NON_INTERACTIVE=1 BIN_PATH=/usr/local/bin bash -s",  "customizations": {
     // Configure properties specific to VS Code.
-    "vscode": {
-      // Set *default* container specific settings.json values on container create.
-      "settings": {},
-      "extensions": ["noir-lang.vscode-noir"]
-    }
+  "vscode": {
+    // Set *default* container specific settings.json values on container create.
+    "settings": {},
+    "extensions": ["noir-lang.vscode-noir"]
+  }
   },
   "workspaceMount": "source=${localWorkspaceFolder},target=/root/workspace,type=bind",
   "workspaceFolder": "/root/workspace"