remove unncessary timezone stuff

nginx/Dockerfile

@@ -1,11 +1,7 @@
 FROM tiangolo/nginx-rtmp:latest-2026-09-07
 
-ENV TZ=UTC
-
 RUN apt-get update -o Acquire::Check-Valid-Until=false && \
     apt-get install -y --no-install-recommends gettext-base && \
-    ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && \
-    echo $TZ > /etc/timezone && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*
 COPY default.conf.template /etc/nginx/templates/default.conf.template