diff --git a/build/Dockerfile.aws-lambda b/build/Dockerfile.aws-lambda
index 7e3ac849..ac47e280 100644
--- a/build/Dockerfile.aws-lambda
+++ b/build/Dockerfile.aws-lambda
@@ -1,3 +1,7 @@
+ARG DOCKER_REGISTRY
+ARG DOCKER_REPOSITORY
+ARG GOTENBERG_VERSION
+
 FROM $DOCKER_REGISTRY/$DOCKER_REPOSITORY:$GOTENBERG_VERSION
 
 USER root
@@ -9,7 +13,7 @@ ENV AWS_LWA_PORT=3000
 ENV AWS_LWA_READINESS_CHECK_PATH=/health
 ENV AWS_LWA_INVOKE_MODE=response_stream
 
-# Gotenberg
+# Gotenberg.
 ENV API_PORT_FROM_ENV=AWS_LWA_PORT
 ENV CHROMIUM_AUTO_START=true
 ENV LIBREOFFICE_AUTO_START=true