Add devcontainer configuration to fix Codespace startup

[Copilot]

Codespaces failed to start due to missing .devcontainer configuration. The production Dockerfile uses FROM scratch which is incompatible with development environments.

Changes

• Added .devcontainer/devcontainer.json
  • Base: typescript-node:1-22-bookworm devcontainer image
  • Docker-in-Docker feature for container management
  • Bun 1.3.5 runtime (matches project version)
  • Svelte/Tailwind/ESLint/Prettier extensions
  • Port 3000 forwarding
  • Auto-run bun install on creation

Configuration

{
  "image": "mcr.microsoft.com/devcontainers/typescript-node:1-22-bookworm",
  "features": {
    "ghcr.io/devcontainers/features/docker-in-docker:2": {
      "version": "latest",
      "moby": true,
      "dockerDashComposeVersion": "v2"
    },
    "ghcr.io/devcontainers-contrib/features/bun:1": {
      "version": "1.3.5"
    }
  }
}

Docker-in-Docker provides isolated Docker access without host socket mount.

Original prompt

Der Codespace für diesen Branch startet nicht mehr

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