Update Dockerfile

Update Docker image to solve this vulnerability:

`*CVE-2024-4741*`
`Vulnerability in openssl/libssl3 3.0.11-1~deb12u2.`

client/Dockerfile

@@ -1,4 +1,4 @@
-FROM nginx:latest
+FROM nginxinc/nginx-unprivileged:perl
 WORKDIR /usr/share/nginx/html
 COPY nginx.conf /etc/nginx/conf.d/default.conf
 COPY ./dist /usr/share/nginx/html