The post-creation 'docker network connect' was failing silently for
unknown reasons (race condition, container state, or Docker internals).
Instead of fighting with this, we now inject the backend network directly
into the compose file before 'docker compose up'. Docker Compose then
attaches the container to the network atomically during creation.
- apps/api/src/api/tool_instances.py: new _ensure_backend_network_in_compose()
adds 'networks: [backend_name]' to the service and declares the network
as external at the top level
- apps/api/src/api/tool_instances.py: call _ensure_backend_network_in_compose()
in both start_instance and restart_instance, right after
_ensure_container_name_in_compose()
- apps/api/src/api/tool_instances.py: removed connect_container_to_network
import and call entirely
- apps/api/src/api/tool_instances.py: import get_backend_network_name from
docker module for use in the new helper
Quality gates: ruff clean
alex
2e156fc534