Production docker-compose with custom network

[sunba91-su]

Goal

Create a production-ready docker-compose.yml inside a deploy/ directory that uses the CI-built ghcr.io image instead of local builds.

Acceptance Criteria

• Create deploy/ directory at repository root
• deploy/docker-compose.yml uses image: ghcr.io/sunba91-su/roket.chat-geekbot:latest (no build: section)
• Defines a custom Docker network geekbot-net (bridge, attachable)
• Keeps existing: restart policy, resource limits, volume mount, env_file
• Removes proxy build args (not needed for pre-built images)
• Volume path for SQLite: /opt/geekbot/data:/data
• Container name: geekbot
• Docker Compose version >= 3.8

Technical Notes

• Current compose is for development (local build). The production version should be deployable with zero local tooling.
• Network should be named so the bot can be extended (e.g., future Postgres, Redis containers can join).
• The image is already pushed by CI: ghcr.io/sunba91-su/roket.chat-geekbot:latest and :${{ github.sha }}

Dependencies

• ghcr.io image push working (verified in CI)