diff --git a/dockerfiles/Dockerfile b/dockerfiles/Dockerfile
index 33a832888c9..4d19e1877b0 100644
--- a/dockerfiles/Dockerfile
+++ b/dockerfiles/Dockerfile
@@ -72,6 +72,10 @@ ARG WAMR_BUILD_TARGET
 ARG EXTRA_CMAKE_FLAGS
 ENV EXTRA_CMAKE_FLAGS=${EXTRA_CMAKE_FLAGS}
 
+# Optional: jemalloc configure flags (e.g., page size). Leave unset to keep defaults.
+ARG FLB_JEMALLOC_OPTIONS
+ENV FLB_JEMALLOC_OPTIONS=${FLB_JEMALLOC_OPTIONS}
+
 # We do not want word splitting for EXTRA_CMAKE_FLAGS in case multiple are defined
 # hadolint ignore=SC2086
 RUN [ -n "${WAMR_BUILD_TARGET:-}" ] && EXTRA_CMAKE_FLAGS="$EXTRA_CMAKE_FLAGS -DWAMR_BUILD_TARGET=$WAMR_BUILD_TARGET"; \
@@ -89,6 +93,7 @@ RUN [ -n "${WAMR_BUILD_TARGET:-}" ] && EXTRA_CMAKE_FLAGS="$EXTRA_CMAKE_FLAGS -DW
     -DFLB_NIGHTLY_BUILD="$FLB_NIGHTLY_BUILD" \
     -DFLB_LOG_NO_CONTROL_CHARS=On \
     -DFLB_CHUNK_TRACE="$FLB_CHUNK_TRACE" \
+    -DFLB_JEMALLOC_OPTIONS="$FLB_JEMALLOC_OPTIONS" \
     $EXTRA_CMAKE_FLAGS \
     ..