chore: moved the share MODEL argument to global

Dockerfile

@@ -1,6 +1,7 @@
+ARG MODEL="BAAI/bge-large-en"
+
 FROM debian:bullseye-slim AS build-image
 
-ARG MODEL="BAAI/bge-large-en"
 ENV MODEL=${MODEL}
 
 COPY ./download.sh ./
@@ -17,7 +18,6 @@ RUN chmod +x *.sh && \
 # Grab a fresh copy of the Python image
 FROM python:3.10-slim
 
-ARG MODEL="BAAI/bge-large-en"
 ENV MODEL=${MODEL}
 ENV NORMALIZE_EMBEDDINGS=1