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.

docker-compose.yml

@@ -0,0 +1,21 @@
+services:
+  sysadmingroup-ru:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    image: sysadmingroup-ru:latest
+    container_name: sysadmingroup-ru
+    restart: unless-stopped
+    ports:
+      - "127.0.0.1:4083:8080"
+    healthcheck:
+      test: ["CMD", "wget", "-qO-", "-I", "http://127.0.0.1:8080/"]
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 5s
+
+# Деплой на web (45.10.53.206):
+# - /opt/docker/sites/sysadmingroup-ru/  ← git clone сюда
+# Команды:
+#   cd /opt/docker/sites/sysadmingroup-ru && git pull && docker compose build && docker compose up -d