diff --git a/Dockerfile b/Dockerfile
index b2be6d8..59126b4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,7 +16,7 @@ RUN mkdir /var/run/sshd && \
     echo "export VISIBLE=now" >> /etc/profile
 
 # Set the timezone and locale
-RUN apt-get install -yq tzdata && \
+RUN DEBIAN_FRONTEND=noninteractive TZ=Etc/UTC apt-get -y install tzdata && \
     ln -fs /usr/share/zoneinfo/Europe/Stockholm /etc/localtime && \
     dpkg-reconfigure -f noninteractive tzdata && \
     locale-gen "en_US.UTF-8"