I want to use doc2pdf program in my python:3.9-slim-bullseye container I added libreoffice-writer unoconv to my container Dockerfile FROM python:3.9-slim-bullseye WORKDIR /project ENV PYTHONDONTWRITEBYTECODE=1 \ PYTHONBUFFERED=1 COPY . . RUN apt-get update && apt-get install --no-install-recommends -y \ libreoffice-writer unoconv \ gcc libc-dev libpq-dev python-dev libxml2-dev libxslt1-dev python3-lxml && apt-get install -y cron &&\ pip install --no-cache-dir -r requirements.txt Then I logged in my container and received error below docker-exec -ti <Container_NAME> bash root@cfdbb27947c6:/project/documents_app/templates# doc2pdf doc_1.docx unoconv: Cannot find a suitable pyuno library and python binary combination in /usr/lib/libreoffice ERROR: No module named 'uno' unoconv: Cannot find a suitable office installation on your system. ERROR: Please locate your office installation and send your feedback to: http://github.com/dagwieers/unoconv/issues root@cfdbb27947c6:/project/documents_app/templates# How can i fix the error? UPDATE 1 Was trying to install python3-uno but it didn't help Also added this uno==0.3.3 base==1.0.4 unotools but still have errors Continue reading...