Update tests.yml

.github/workflows/tests.yml

@@ -78,11 +78,13 @@ jobs:
             echo $PWD && ls
             sudo useradd -m -p ${{ secrets.INKY_INITAL_PASSWORD }} inky
             sudo usermod -a -G adm,dialout,cdrom,sudo,audio,video,plugdev,games,users,input,netdev,gpio,i2c,spi inky
-            su -c inky
-            whoami
+            su inky
             cd /home/inky
             sudo apt-get update -y
             sudo apt-get install python3.9 -y
+            python --version
+            which python
+            which python3
             sudo apt-get install -y python3-pip
             sudo apt-get install zlib1g libjpeg-dev libatlas-base-dev rustc libopenjp2-7 python3-dev scons libssl-dev python3-venv python3-pip git libfreetype6-dev -y
             echo $PWD && ls