Migrate to env-driven templates and slavic-pulse feature set.

Replace hardcoded HTML with .env generation, YouTube thumbnail backgrounds, responsive FHD/vertical intro, hardened nginx, and updated Dokploy deploy flow.

Co-authored-by: Cursor <cursoragent@cursor.com>

Dockerfile

@@ -1,19 +1,25 @@
 FROM nginx:1.27-alpine AS production
 
+RUN apk add --no-cache gettext
+
 # Remove default nginx config
 RUN rm /etc/nginx/conf.d/default.conf
 
-# Copy nginx config from project root
+# Copy nginx configs from project root
+COPY nginx.conf /etc/nginx/nginx.conf
 COPY default.conf /etc/nginx/conf.d/default.conf
 
-# Copy web files (index.html + assets)
-COPY index.html /usr/share/nginx/html/index.html
-COPY site.webmanifest /usr/share/nginx/html/site.webmanifest
+# Copy static assets
 COPY assets/ /usr/share/nginx/html/assets/
 
+# Templates + generator (rendered at container start)
+COPY index.html.template site.webmanifest.template generate-from-env.sh /opt/agencja-ai/
+RUN chmod +x /opt/agencja-ai/generate-from-env.sh
+
+COPY docker-entrypoint.sh /docker-entrypoint.d/99-generate-from-env.sh
+RUN chmod +x /docker-entrypoint.d/99-generate-from-env.sh
+
 EXPOSE 80
 
 HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
     CMD wget -qO- http://localhost:80/ || exit 1
-
-CMD ["nginx", "-g", "daemon off;"]