[YUNIKORN-1299] Docker build architecture readme fixes (#95)
Closes: #95
Signed-off-by: Wilfred Spiegelenburg <wilfreds@apache.org>
diff --git a/README.md b/README.md
index d9bdeb6..08d5a03 100644
--- a/README.md
+++ b/README.md
@@ -48,11 +48,13 @@
Run `make image` to build the docker image `apache/yunikorn:web-latest`.
Run `make run` to build the image and deploy the container from the docker image `apache/yunikorn:web-latest`.
-You can set `REGISTRY` and `VERSION` in the commandline to build docker image with a specified version and registry. For example,
+You can set `REGISTRY`, `VERSION` and `DOCKER_ARCH` in the commandline to build docker image with a specified version, registry and host architecture. For example,
```
-make image REGISTRY=apache VERSION=latest
+make image REGISTRY=apache VERSION=latest DOCKER_ARCH=amd64
```
-This command will build binary with version `web-latest` and the docker full image tag is `apache/yunikorn:web-latest`.
+This command will build binary with version `web-latest` and the docker full image tag is `apache/yunikorn:web-amd64-latest`.
+
+The Makefile is smart enough to detect your host architecture but it will tag the image name.
Run `make deploy-prod` to build and deploy the scheduler webapp using docker-compose.
The project uses [multi-stage build](https://docs.docker.com/develop/develop-images/multistage-build/) feature of the docker and requires Docker 17.05 or higher.
