Fix build client

Enhance configuration for the client build and container.

client/Dockerfile

 #################################################
 # container shipping client source and dependencies
 #################################################
-FROM node:16-buster as client-base-container
+FROM node:16.20-alpine3.18 as client-base-container
 
 ARG API_URL
 
 RUN mkdir /client \
- && cd /client \
- && npm install yarn
+  && cd /client
 
 WORKDIR /client
 
 COPY package.json /client/
+COPY yarn.lock /client/
 
 RUN yarn install
 
 COPY . /client
 
-
 #################################################
 # container that will generate the client
 #################################################
@@ -27,11 +26,10 @@ ARG API_URL
 
 RUN yarn run generate
 
-
 #################################################
 # container that will serve the client
 #################################################
-FROM nginxinc/nginx-unprivileged:latest as client-static-serve
+FROM nginxinc/nginx-unprivileged:stable-alpine as client-static-serve
 
 COPY --from=client-static-build /client/dist  /usr/share/nginx/html
 COPY --from=client-static-build /client/nginx.conf  /etc/nginx/conf.d/default.conf