message: mount the current directory in /tmp in Docker instructions
diff: @@ -118,7 +118,7 @@ for building and running tests for both the Linux and Android platforms.
  docker build -t "objectstore" .
  # Run bash interactively from the built Docker image,
  # mounting the current directory
  -docker run -it -v `pwd`:`pwd` -w `pwd` objectstore bash
  +docker run --rm -it -v $(pwd):/tmp -w /tmp objectstore bash
  # Build the object store for Linux and run tests
  > cmake .
  > make
  