diff --git a/Dockerfile b/Dockerfile
index f345741..56878df 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -46,3 +46,5 @@ RUN git clone https://github.com/michal-h21/tex4ebook.git && \
 RUN wget https://archive.org/download/kindlegen_linux_2_6_i386_v2_9/kindlegen_linux_2.6_i386_v2_9.tar.gz && \
     tar xzf kindlegen_linux_2.6_i386_v2_9.tar.gz && \
     mv kindlegen /usr/bin
+
+CMD ["/bin/bash"]