Chore: Add timezone to container

Dockerfile

@@ -12,6 +12,8 @@ RUN apt update --allow-releaseinfo-change && \
       libssl-dev
 
 # Setup Engine
+ENV TZ=Europe/Vienna
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 RUN mkdir -p /srv/src
 RUN mkdir -p /srv/tests
 RUN mkdir -p /srv/config