dockerfiles/go: go install from GOPATH and remove bash from CMD
diff --git a/tools/dockerfile/grpc_go/Dockerfile b/tools/dockerfile/grpc_go/Dockerfile
index e1671ea..4ee985c 100644
--- a/tools/dockerfile/grpc_go/Dockerfile
+++ b/tools/dockerfile/grpc_go/Dockerfile
@@ -52,8 +52,8 @@
ADD service_account service_account
# Build the interop client and server
-RUN cd src/google.golang.org/grpc/interop/client && go install
-RUN cd src/google.golang.org/grpc/interop/server && go install
+RUN go install google.golang.org/grpc/interop/client
+RUN go install google.golang.org/grpc/interop/server
# Specify the default command such that the interop server runs on its known testing port
-CMD ["/bin/bash", "-c", "cd src/google.golang.org/grpc/interop/server && go run server.go --use_tls=true --port=8020"]
+CMD ["server", "--use_tls=true", "--port=8020"]