diff --git a/builder/build.sh b/builder/build.sh
index 44363a6..4a15394 100755
--- a/builder/build.sh
+++ b/builder/build.sh
@@ -100,6 +100,7 @@ docker run --detach \
     --name "$CONTAINER_NAME" \
     --network hiy-net \
     "${ENV_FILE_ARG[@]+"${ENV_FILE_ARG[@]}"}" \
+    --env "PORT=${PORT}" \
     --expose "$PORT" \
     --label "hiy.app=${APP_ID}" \
     --label "hiy.port=${PORT}" \