switch default docker-build command to build backend

docs/getting-started/deployment-other.md

@@ -10,21 +10,20 @@ title: Other
 Run the following commands if you have Docker environment
 
 ```bash
+$ yarn install
 $ yarn docker-build
-$ docker run --rm -it -p 80:80 spotify/backstage
+$ docker run --rm -it -p 7000:7000 -e NODE_ENV=development example-backend:latest
 ```
 
 Then open http://localhost/ on your browser.
 
 ### Running with `docker-compose`
 
-Run the following commands if you have docker and docker-compose for a full
-example, with the example backend also deployed.
+There is also a `docker-compose.yaml` that you can use to replace the previous
+`docker run` command:
 
 ```bash
-$ yarn docker-build:all
+$ yarn install
+$ yarn docker-build
 $ docker-compose up
 ```
-
-Then open http://localhost:3000 on your browser to see the example app with an
-example backend.

docs/overview/architecture-overview.md

@@ -171,21 +171,19 @@ The frontend container can be built with a provided command.
 ```bash
 yarn install
 yarn tsc
-yarn build
-yarn run docker-build
+yarn run docker-build:app
 ```
 
 Running this will simply generate a Docker container containing the contents of
-the UIs `dist` directory. The resulting container will be about 50MB in size.
+the UIs `dist` directory.
 
-The backend container can be built by running the following command in the
-`packages/backend` directory.
+The backend container can be built by running the following command:
 
 ```bash
-yarn run build-image
+yarn run docker-build
 ```
 
-This will create a ~500MB container called `example-backend`.
+This will create a container called `example-backend`.
 
 The lighthouse-audit-service container is already publicly available in Docker
 Hub and can be downloaded and ran with