feat: improve docker-compose generation with restart, depends_on, network, and ZMQ mode

[Sahil-u07]

What's this

The --compose flag existed but generated a bare docker-compose.yml - just image: and volumes: per service. This makes the output actually usable.

What changed

• restart: on-failure on every service so nodes that lose a startup
  race don't die permanently
• Sequential depends_on between services for startup ordering
  (ordering hint only - concore studies use feedback loops so this
  isn't a correctness guarantee)
• Shared concore_net bridge network so containers can reach each
  other by name without manual port wiring
• New --zmq flag that injects CONCORE_TRANSPORT=zmq into each
  service environment for ZMQ transport studies
• Console warning when --compose is used but no docker run script
  exists yet, replacing the previous silent None return

Files touched

• concore_cli/commands/build.py - compose generation logic
• concore_cli/cli.py - --zmq flag and validation
• tests/test_compose_generation.py - 8 new tests

Verify locally

python -m pytest tests/test_compose_generation.py -v
ruff check concore_cli/commands/build.py concore_cli/cli.py tests/test_compose_generation.py

[Copilot]

Pull request overview

Improves the --compose flag output in the concore build command so the generated docker-compose.yml is actually runnable: services get a restart policy, a shared bridge network, and sequential depends_on links. Adds a new --zmq flag that injects CONCORE_TRANSPORT=zmq into every service for ZMQ-mode studies, and replaces the previous silent None return with a user-visible warning when no run script exists.

Changes:

• Extend _write_docker_compose to emit restart, depends_on, networks, and optional ZMQ environment per service, plus a top-level concore_net bridge network and console warning when the docker run file is missing.
• Add --zmq CLI flag with validation that it requires --compose, and thread zmq_mode through to build_workflow / _write_docker_compose.
• Add 8 unit tests covering restart policy, network section, depends_on ordering, ZMQ env presence/absence, missing-script behavior, and CLI validation.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
concore_cli/commands/build.py	Reworks compose generation: adds restart/depends_on/networks/env blocks per service, moves networks declaration to bottom, warns when run script is missing, accepts console and zmq_mode parameters.
concore_cli/cli.py	Adds --zmq build option, validates it requires --compose, passes zmq_mode to build_workflow.
tests/test_compose_generation.py	New tests for compose generation features and --zmq CLI validation.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.