Update nginx-unprivileged docker image

Author: GregJHarris

Dockerfile

@@ -19,18 +19,7 @@ COPY *.json ./
 RUN npm run build:nolint
 
 # Create image for deployment
-FROM nginxinc/nginx-unprivileged:stable AS deployment
-
-
-# Update package lists and upgrade libpng1.6 (libpng16-16 runtime)
-# to fix a security vulnerability (CVE-2025-64720)
-USER root
-ENV DEBIAN_FRONTEND=noninteractive
-
-RUN set -eux; \
-    apt-get update; \
-    apt-get install -y --no-install-recommends libpng16-16=1.6.39-2+deb12u1; \
-    rm -rf /var/lib/apt/lists/*
+FROM nginxinc/nginx-unprivileged:1.29-alpine AS deployment
 
 USER nginx
 COPY nginx.conf /etc/nginx/nginx.conf