diff --git a/docker/backend/Dockerfile b/docker/backend/Dockerfile
index e2629549c..ca5d79eca 100644
--- a/docker/backend/Dockerfile
+++ b/docker/backend/Dockerfile
@@ -1,15 +1,16 @@
 FROM docker.io/ubuntu:latest
 
-# debug info
-# RUN lsb_release -a
-# RUN curl -k https://google.de
-RUN env
-# RUN curl -sSLk -x $HTTP_PROXY
-
+# compile-time dependencies
 RUN apt-get -y update && apt-get -y install inotify-tools
 RUN apt-get -y update && apt-get -y install haskell-stack git
-RUN apt-get -y update && apt-get -y install alex g++ happy libghc-zlib-dev libpq-dev libsodium-dev locales locales-all pkg-config
+RUN apt-get -y update && apt-get -y install alex g++ happy libghc-zlib-dev libpq-dev libsodium-dev pkg-config
 RUN apt-get -y update && apt-get -y install llvm
+RUN apt-get -y update && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends tzdata
+RUN apt-get -y update && apt-get -y install locales locales-all
+
+# run-time dependencies for uniworx binary
+RUN apt-get -y update && apt-get -y install fonts-roboto
+RUN apt-get -y update && apt-get -y install texlive-luatex
 
 ENV LANG=en_US.UTF-8