🐳 preload tiktoken encoding in Dockerfile_ecs (#193)

src/Dockerfile_ecs

@@ -14,6 +14,10 @@ RUN groupadd -r appuser && useradd -r -g appuser appuser && \
 
 USER appuser
 
+# Preload tiktoken encoding: https://github.com/aws-samples/bedrock-access-gateway/issues/118
+ENV TIKTOKEN_CACHE_DIR=/app/.cache/tiktoken
+RUN python3 -c 'import tiktoken_ext.openai_public as tke; tke.cl100k_base()'
+
 ENV PORT=8080
 
 HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \