Update Dockerfile

Dockerfile

@@ -1,5 +1,6 @@
 FROM python:3.11-slim
 
+# Declare your environment variables with the ARG directive
 ARG HF_TOKEN
 
 # Install build dependencies for packages such as uvicorn[standard]
@@ -26,11 +27,8 @@ RUN pip install --no-cache-dir --upgrade pip && \
     pip install --no-cache-dir -r requirements.txt
 
 # Pre-download the SentenceTransformer embedding model to avoid runtime cold-starts
-RUN if [ -z "$HF_TOKEN" ]; then \
-        echo "HF_TOKEN build arg is required to download google/embeddinggemma-300m" >&2; \
-        exit 1; \
-    fi && \
-    HF_TOKEN=$HF_TOKEN python - <<'PY'
+# You can use them like environment variables
+RUN python - <<'PY'
 import os
 from sentence_transformers import SentenceTransformer