docs: Add notes about docker deployments in Readme

README.md

@@ -149,3 +149,11 @@ GRANT readonly TO explorer;
 ```bash
 $ PGPASSWORD="password" psql -h 127.0.0.1 -U explorer databasename
 ```
+
+## Deployments
+Both `indexer-explorer` and `circulating-supply` binaries are run within Docker, their `Dockerfile`s can be found within their respective directoires/workspaces. Docker images are built using Google Cloud Build and then deployed to Google Cloud Run. The following commands can be used to build the Docker images:
+
+```bash
+$ docker build -f ./indexer/Dockerfile .
+$ docker build -f ./circulating-supply/Dockerfile .
+```