Use docker-devbox:latest as default image

The docker-devbox image extends claude-code-sandbox with RE and
embedded development tools (Ghidra, Rizin, pwntools, PlatformIO, etc.)

See: https://github.com/jlaustill/docker-devbox

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: jlaustill

src/config.ts

@@ -4,7 +4,7 @@ import os from "os";
 import { SandboxConfig } from "./types";
 
 const DEFAULT_CONFIG: SandboxConfig = {
-  dockerImage: "claude-code-sandbox:latest",
+  dockerImage: "docker-devbox:latest",
   autoPush: true,
   autoCreatePR: true,
   autoStartClaude: true,

src/container.ts

@@ -67,7 +67,7 @@ export class ContainerManager {
   }
 
   private async ensureImage(): Promise<void> {
-    const imageName = this.config.dockerImage || "claude-code-sandbox:latest";
+    const imageName = this.config.dockerImage || "docker-devbox:latest";
 
     // Check if image already exists
     try {
@@ -250,7 +250,7 @@ exec claude --dangerously-skip-permissions' > /start-claude.sh && \\
 
     // Create container
     const container = await this.docker.createContainer({
-      Image: this.config.dockerImage || "claude-code-sandbox:latest",
+      Image: this.config.dockerImage || "docker-devbox:latest",
       name: `${
         this.config.containerPrefix || "claude-code-sandbox"
       }-${Date.now()}`,

src/index.ts

@@ -212,7 +212,7 @@ export class ClaudeSandbox {
       credentials,
       workDir,
       repoName,
-      dockerImage: this.config.dockerImage || "claude-sandbox:latest",
+      dockerImage: this.config.dockerImage || "docker-devbox:latest",
       prFetchRef,
       remoteFetchRef,
     };