message: document how to run release builds
diff: @@ -64,3 +64,9 @@ cargo run --bin aggregator -- -c configs/dev-aggregator.toml
  ```bash
  docker-compose -f docker/docker-compose.yml up --build
  ```
  +
  +By default, the docker images use debug builds. To use a release build, run:
  +
  +```bash
  +docker-compose -f docker/docker-compose.yml -f docker/docker-compose-release.yml up --build
  +```
  