Problem

docker compose up --detach attempts to start all 5 containers without waiting for the validator to be available. The bridge node times out if it the validator node isn't available in time. This means that a docker compose up --detach invocation may result in 3 running containers and 2 stopped ones (bridge node, beacond)

Proposal

Implement a health check so that the bridge node isn't started until the validator broadcasts that it is running.

Acceptance Criteria

• docker compose up --detach always starts up the entire dev stack