introduce nginex-proxy

use host ip if working in wsl

server/Dockerfile

@@ -10,7 +10,7 @@ WORKDIR /app
 # --- Systemabhängigkeiten für MariaDB-Client & Locale ---
 RUN apt-get update \
     && apt-get install -y --no-install-recommends \
-       libmariadb-dev-compat libmariadb-dev locales \
+       libmariadb-dev-compat libmariadb-dev locales git\
     && rm -rf /var/lib/apt/lists/*
 
 # --- Locale konfigurieren ---