fixing indentation

Dockerfile

@@ -20,9 +20,9 @@ ENV LD_LIBRARY_PATH "/usr/local/lib"
 
 # Install DGraph and update dependencies to right versions.
 RUN go get -v github.com/robfig/glock && \
-	go get -v github.com/dgraph-io/dgraph/... && \
-	glock sync github.com/dgraph-io/dgraph && echo "v0.2.3" && \
-  go test github.com/dgraph-io/dgraph/...
+       go get -v github.com/dgraph-io/dgraph/... && \
+       glock sync github.com/dgraph-io/dgraph && echo "v0.2.3" && \
+       go test github.com/dgraph-io/dgraph/...
 
 # Create the dgraph and data directory. These directories should be mapped
 # to host machine for persistence.