merge: integrate Emmanuel changes into main

frontend/Dockerfile

@@ -1,9 +1,10 @@
-FROM node:22-alpine AS build
+FROM node:22-slim AS build
 
 WORKDIR /app
 
 COPY package*.json ./
 RUN npm ci
+RUN npx playwright install --with-deps chromium
 
 COPY . .
 
@@ -13,6 +14,9 @@ ARG VITE_GA_ID
 ENV VITE_API_URL=${VITE_API_URL}
 ENV VITE_GA_ID=${VITE_GA_ID}
 
+ARG VITE_TURNSTILE_SITE_KEY
+ENV VITE_TURNSTILE_SITE_KEY=${VITE_TURNSTILE_SITE_KEY}
+
 RUN npm run build