Modernize Dev Container

.devcontainer/Dockerfile

@@ -1,10 +1,17 @@
-FROM ubuntu:18.04
-
-WORKDIR /home/
-
-COPY . .
-
-RUN bash ./setup.sh
-
-ENV PATH="/root/.cargo/bin:$PATH"
+FROM ubuntu:latest
 
+# Install basic dependencies
+RUN apt-get update && \
+    apt-get install -y \
+    curl \
+    wget \
+    git \
+    ca-certificates \
+    gnupg2 \
+    jq \
+    sudo \
+    nano \
+    vim \
+    build-essential \
+    openssl && \
+    rm -rf /var/lib/apt/lists/*

.devcontainer/devcontainer.json

@@ -1,20 +1,28 @@
 {
-	"name": "Codespaces Rust Starter",
-	"extensions": [
-		"cschleiden.vscode-github-actions",
-		"ms-vsliveshare.vsliveshare",
-		"matklad.rust-analyzer",
-		"serayuzgur.crates",
-		"vadimcn.vscode-lldb"
-	],
-	"dockerFile": "Dockerfile",
-	"settings": {
-		"editor.formatOnSave": true,
-		"terminal.integrated.shell.linux": "/usr/bin/zsh",
-		"files.exclude": {
-			"**/CODE_OF_CONDUCT.md": true,
-			"**/LICENSE": true
-		}
-	}
-}
-
+    "name": "bp7-rs Dev Container",
+    "build": {
+        "context": "..",
+        "dockerfile": "Dockerfile"
+    },
+    "remoteUser": "ubuntu",
+    "features": {
+        "ghcr.io/devcontainers/features/common-utils:2": {
+            "configureZshAsDefaultShell": true
+        },
+        "ghcr.io/devcontainers/features/rust:1": {
+            "targets": "wasm32-unknown-unknown,wasm32-wasip1"
+        }
+    },
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "github.vscode-github-actions",
+                "rust-lang.rust-analyzer",
+                "fill-labs.dependi",
+                "tamasfe.even-better-toml",
+                "vadimcn.vscode-lldb"
+            ]
+        }
+    },
+    "postCreateCommand": "./.devcontainer/post-create.sh"
+}

.devcontainer/post-create.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+# Install additional Rust toolchain
+rustup install nightly
+
+# Install common Rust tools (using cargo-binstall for speed)
+curl -L --proto '=https' --tlsv1.2 -sSf \
+    https://raw.githubusercontent.com/cargo-bins/cargo-binstall/main/install-from-binstall-release.sh | bash
+
+cargo binstall -y \
+    cargo-expand \
+    cargo-edit \
+    cargo-audit \
+    cargo-geiger \
+    cbindgen \
+    wasm-pack \
+    wasmtime-cli