add time zones

Dockerfile

@@ -14,7 +14,8 @@ ENV PATH=${VIRTUALENV}/bin:${EPICS_BASE}/bin/${EPICS_HOST_ARCH}:${PATH}
 ENV SUPPORT ${EPICS_ROOT}/support
 ENV IOC ${EPICS_ROOT}/ioc
 ENV SRC_LOCATION=/opt/src
-
+ARG DEBIAN_FRONTEND=noninteractive
+ENV TZ=Europe/Berlin
 
 ##### developer / build stage ##################################################
 
@@ -48,7 +49,8 @@ RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && \
 ENV LANG en_US.UTF-8  
 ENV LANGUAGE en_US:en  
 ENV LC_ALL en_US.UTF-8
-
+## setting the timezone
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone  
 # Clone the conf files into the docker container
 RUN git clone --depth 1 --recursive --branch R7.0.7 https://github.com/epics-base/epics-base.git ${SRC_LOCATION}
 # Specify the location of the installation