From 597c552e516a848b5393256c625bb638f97cc304 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@helsinki.at>
Date: Mon, 9 Dec 2019 10:39:56 +0100
Subject: generic timezone setting


diff --git a/debian/stretch/Dockerfile b/debian/stretch/Dockerfile
index f14271e..42ceca5 100644
--- a/debian/stretch/Dockerfile
+++ b/debian/stretch/Dockerfile
@@ -20,11 +20,12 @@ RUN set -x \
     && apt-get update -q \
     && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
+ENV TZ="Europe/Vienna"
 RUN set -x \
     && echo "de_AT.UTF-8 UTF-8\nen_US.UTF-8 UTF-8" > /etc/locale.gen \
     && locale-gen \
-    && echo "Europe/Vienna" > /etc/timezone \
-    && dpkg-reconfigure -f noninteractive tzdata
+    && ln -snf /usr/share/zoneinfo/${TZ} /etc/localtime \
+    && echo ${TZ} > /etc/timezone
 
 COPY common/bin/tini /usr/local/bin/
 
diff --git a/ubuntu/bionic/Dockerfile b/ubuntu/bionic/Dockerfile
index 1cf9ff6..d5f8591 100644
--- a/ubuntu/bionic/Dockerfile
+++ b/ubuntu/bionic/Dockerfile
@@ -20,11 +20,12 @@ RUN set -x \
     && apt-get update -q \
     && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
+ENV TZ="Europe/Vienna"
 RUN set -x \
     && echo "de_AT.UTF-8 UTF-8\nen_US.UTF-8 UTF-8" > /etc/locale.gen \
     && locale-gen \
-    && echo "Europe/Vienna" > /etc/timezone \
-    && dpkg-reconfigure -f noninteractive tzdata
+    && ln -snf /usr/share/zoneinfo/${TZ} /etc/localtime \
+    && echo ${TZ} > /etc/timezone
 
 COPY common/bin/tini /usr/local/bin/
 
-- 
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