fixes for rpi bootstrap process

rpi_bootstrap.sh

@@ -14,8 +14,8 @@ set -e
 echo "SET LOCALE"
 raspi-config
 echo "deb-src http://raspbian.raspberrypi.org/raspbian/ buster main contrib non-free rpi" >> /etc/apt/sources.list
-apt get update
-apt get upgrade -y
+apt update
+apt upgrade -y
 apt install puppet git r10k -y
 
 
@@ -37,8 +37,10 @@ cd build && make
 make install
 
 # install packages for scipy
-apt install gfortran libatlas-base-dev python3-pybind11
-apt build-dep python3-scipy
+apt install gfortran libatlas-base-dev python3-pybind11 -y
+apt build-dep python3-scipy -y
+# remove apt version of cython
+apt-get remove cython3 -y
 
 # upgrade pip
 pip3 install --upgrade pip