remove spurious common_config and force a container build for the python backend

setup.sh

@@ -162,10 +162,9 @@ function python_backend(){
     echo "HF_CACHE_DIR=${HF_CACHE_DIR}" >> .env
 
     python3 ./python_backend/init_model.py --model_name "${MODEL}" --org_name "${ORG}" --model_dir "${MODELS_ROOT_DIR}" --use_int8 "${USE_INT8}"
+    bash -c "source .env ; docker compose build"
 }
 
-common_config
-
 # choose backend
 echo "Choose your backend:"
 echo "[1] FasterTransformer backend (faster, but limited models)"
@@ -185,4 +184,4 @@ then
 else
   echo "You can run ./launch.sh to start the FauxPilot server."
   exit 0
-fi;
+fi