feat: initial dockerized 301 redirect to sag24.ru

nginx:alpine container, listens 8080, returns 301 -> https://sag24.ru$request_uri.
Mapped to host port 4083 on web.hhivp.com via docker-compose.

Dockerfile

@@ -0,0 +1,9 @@
+# syntax=docker/dockerfile:1.7
+FROM nginx:1.27-alpine
+
+COPY nginx.conf /etc/nginx/nginx.conf
+
+EXPOSE 8080
+
+HEALTHCHECK --interval=30s --timeout=5s --retries=3 \
+    CMD wget -qO- http://127.0.0.1:8080/ -I 2>&1 | grep -q "301 Moved" || exit 1