diff --git a/Dockerfile b/Dockerfile
index 99f1acf6..b5341eba 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,9 +2,6 @@
 # nodejs 20 hangs on build with armv6/armv7
 FROM docker.io/library/node:18-alpine AS build_node_modules
 
-# Update npm to latest
-RUN npm install -g npm@latest
-
 # Copy Web UI
 COPY src /app
 WORKDIR /app
@@ -39,7 +36,7 @@ RUN apk add --no-cache \
     wireguard-tools
 
 # Use iptables-legacy
-RUN update-alternatives --install /sbin/iptables iptables /sbin/iptables-legacy 10 --slave /sbin/iptables-restore iptables-restore /sbin/iptables-legacy-restore --slave /sbin/iptables-save iptables-save /sbin/iptables-legacy-save
+RUN update-alternatives --install /usr/sbin/iptables iptables /usr/sbin/iptables-legacy 10 --slave /usr/sbin/iptables-restore iptables-restore /usr/sbin/iptables-legacy-restore --slave /usr/sbin/iptables-save iptables-save /usr/sbin/iptables-legacy-save
 
 # Set Environment
 ENV DEBUG=Server,WireGuard