diff --git a/Dockerfile.css b/Dockerfile.css
index 37ab2e5..afa492e 100644
--- a/Dockerfile.css
+++ b/Dockerfile.css
@@ -2,7 +2,7 @@ FROM golang:bullseye AS builder
 
 COPY . /src
 
-RUN apt update && apt install npm
+RUN apt update && apt install -y npm
 RUN cd / && npm i bootswatch && npm i bootstrap-icons
 
 RUN cd /src/cmd/WatchYourLAN/ && CGO_ENABLED=0 go build -o /WatchYourLAN .