diff --git a/Dockerfile.pg b/Dockerfile.pg
index 2cafce0..69e6652 100644
--- a/Dockerfile.pg
+++ b/Dockerfile.pg
@@ -10,7 +10,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     curl -fsSL https://packagecloud.io/install/repositories/timescale/timescaledb/script.deb.sh | bash && \
     apt-get update && apt-get install -y --no-install-recommends \
         postgresql-16-postgis-3 timescaledb-2-postgresql-16 && \
-    # Load TimescaleDB at startup via a drop-in (keeps official entrypoint intact).
+    mkdir -p /etc/postgresql/16/main/conf.d && \
     echo "shared_preload_libraries = 'timescaledb'" > /etc/postgresql/16/main/conf.d/timescaledb.conf && \
     rm -rf /var/lib/apt/lists/*