Update Dockerfile

Dockerfile

@@ -4,8 +4,8 @@ FROM alpine:latest
 # Install dnsmasq and curl (for health checks)
 RUN apk --no-cache add dnsmasq curl
 
-# Create dnsmasq.conf inline with correct formatting
-RUN echo "address=/lehrastudio.com/195.179.239.105\nlog-queries\nlisten-address=0.0.0.0" > /etc/dnsmasq.conf
+# Create dnsmasq.conf inline
+RUN printf "address=/lehrastudio.com/195.179.239.105\nlog-queries\nlisten-address=0.0.0.0\n" > /etc/dnsmasq.conf
 
 # Expose port 7860 (the custom DNS port)
 EXPOSE 7860/udp