diff --git a/Dockerfile b/Dockerfile
index 044faee..c427a2e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,4 +7,4 @@ ADD . /
 RUN pip3 install -r /requirements.txt
 
 EXPOSE 80/tcp
-CMD [ "/usr/local/bin/python3", "-m", "matemat", "/etc/matemat.conf", "/matemat.docker.conf" ]
+CMD [ "/run.sh" ]
diff --git a/run.sh b/run.sh
new file mode 100755
index 0000000..ca8c643
--- /dev/null
+++ b/run.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+export LD_PRELOAD=/usr/lib/libmagic.so.1
+
+/usr/local/bin/python3 -m matemat /etc/matemat.conf /matemat.docker.conf