Minor Adjustments on Hotrod Readme

- exposing more ports on Dockerfile
and copy only binary to Dockerfile

Signed-off-by: Guilherme Baufaker Rêgo <gbaufake@redhat.com>

Author: Guilherme Baufaker Rêgo

examples/hotrod/Dockerfile

@@ -1,4 +1,4 @@
 FROM scratch
-EXPOSE 8080
-COPY . /
+EXPOSE 8080 8081 8082 8083
+COPY collector-linux /
 CMD ["./collector-linux", "all"]

examples/hotrod/README.md

@@ -48,20 +48,9 @@ Then open http://127.0.0.1:8080
 
 
 # HotROD on Containerized Version
-## Requirements
-- go
-- docker-compose
-- docker
-### Creating the images
-
-```
-chmod +x ./create-image.sh
-./create-image.sh
-```
-
-### Run Everyting
+## Running on Docker
 ```
-docker run -p 8080:8080 -p 8082:8082 -p 8083:8083 jaegertracing/hotrod
+docker run -d -p 8080:8080 -p 8082:8082 -p 8083:8083 jaegertracing/hotrod &&
 docker run -d -p6831:6831/udp -p16686:16686 jaegertracing/all-in-one:latest
 ```