Merge pull request 'Update base images in Dockerfile to use bookworm variants' (#3) from development into main

Reviewed-on: #3

frontend/Dockerfile

@@ -1,4 +1,4 @@
-FROM node:22-alpine AS build
+FROM node:22-bookworm-slim AS build
 WORKDIR /app
 COPY package.json package-lock.json* ./
 RUN npm install
@@ -7,8 +7,7 @@ ARG VITE_API_URL=/api/v1
 ENV VITE_API_URL=${VITE_API_URL}
 RUN npm run build
 
-FROM nginx:1.29-alpine-slim
-RUN apk upgrade --no-cache
+FROM nginx:1.29-bookworm
 COPY nginx.conf /etc/nginx/conf.d/default.conf
 COPY --from=build /app/dist /usr/share/nginx/html
 EXPOSE 80