Upgrade base image from Debian bookworm to trixie (current stable)

Bookworm (Debian 12) reaches EOL June 2026. Trixie (Debian 13) has been
stable since August 2025 with support until 2028/LTS until 2030.

DOCKER_HUB.md

@@ -428,7 +428,7 @@ docker compose run --rm devbox bash   # interactive shell
 
 ### Base image (`latest`)
 
-- **Debian bookworm-slim** — glibc, full terminal/PTY support
+- **Debian trixie-slim** — glibc, full terminal/PTY support
 - **opencode** — AI coding assistant
 - **Node.js 22** — for npx-based MCP servers
 - **AWS CLI v2** — SSO and Bedrock authentication

Dockerfile

@@ -1,7 +1,7 @@
 # opencode-devbox — portable AI dev environment
 # Debian-based container with opencode and configurable dev tools
 
-ARG DEBIAN_VERSION=bookworm-slim
+ARG DEBIAN_VERSION=trixie-slim
 FROM debian:${DEBIAN_VERSION} AS base
 
 ARG TARGETARCH

README.md

@@ -27,7 +27,7 @@ docker compose run --rm devbox
 
 ## Features
 
-- **Debian bookworm** base — glibc, full PTY/terminal support
+- **Debian trixie** base — glibc, full PTY/terminal support
 - **Configurable providers** — Anthropic, OpenAI, AWS Bedrock via env vars
 - **Host filesystem access** — bind mount any directory as `/workspace`
 - **SSH key forwarding** — git push/pull to private repos
@@ -433,7 +433,7 @@ Host Machine
 ├── ~/.aws             ──bind mount──▶  /home/developer/.aws (Bedrock SSO)
 └── .env               ──env vars───▶  provider config + API keys
 
-Container (Debian bookworm)
+Container (Debian trixie)
 ├── opencode binary
 ├── oh-my-opencode-slim (optional — multi-agent orchestration plugin, includes Bun)
 ├── AWS CLI v2 (SSO + Bedrock auth)