diff --git a/Dockerfile b/Dockerfile
index e8c3487..b2adc06 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -156,9 +156,11 @@ LABEL org.opencontainers.image.title="Kindle Comic Converter"
 
 
 ENV PATH="/opt/venv/bin:$PATH"
-WORKDIR /opt/kcc
+WORKDIR /app
 COPY . /opt/kcc
-RUN ln -s /app/kindlegen /bin/kindlegen && \
+RUN DEBIAN_FRONTEND=noninteractive apt-get update -y && apt-get -yq upgrade && \
+    apt-get install -y p7zip-full unrar-free  && \
+    ln -s /app/kindlegen /bin/kindlegen && \
     cat /opt/kcc/kindlecomicconverter/__init__.py | grep version | awk '{print $3}' | sed "s/'//g" > /IMAGE_VERSION
 
 ENTRYPOINT ["/opt/kcc/kcc-c2e.py"]