Prepare new Python env using pyenv if demo

hf.sh

@@ -24,6 +24,13 @@ if [ ! -z "${SPACE_ID}" ] && [ "${DEMO_SPACE_ID}" == "${SPACE_ID}" ]
 then
   # Generate GISKARD_DEFAULT_API_KEY in demo space instead of set from Secrets
   export GISKARD_DEFAULT_API_KEY=gsk-$(cat /dev/urandom | tr -dc '[:alpha:]' | fold -w ${1:-28} | head -n 1)
+  # Prepare a new env for demo worker
+  curl https://pyenv.run | bash
+  pyenv install $(python --version | cut -d' ' -f2)
+  pyenv global $(python --version | cut -d' ' -f2)
+  pip install --upgrade pip
+  WHEEL=$(ls $GSK_DIST_PATH/python-client/giskard*.whl) && pip install $WHEEL\[server\]
+  pip install -r /requirements.txt
   # Append demo worker supervisord item to conf
   echo """
 [program:demo_worker]
@@ -33,7 +40,7 @@ autorestart=true
 redirect_stderr=true
 startsecs=0
 startretries=5000
-command=/bin/bash -c 'pip install -r /requirements.txt && python -m giskard.cli worker start -u \"http://localhost:9000\" -k \"\$GISKARD_DEFAULT_API_KEY\"; sleep 5'
+command=/bin/bash -c 'python -m giskard.cli worker start -u \"http://localhost:9000\" -k \"\$GISKARD_DEFAULT_API_KEY\"; sleep 5'
 """ >> "${GSK_DIST_PATH}/supervisord.conf"
 fi