Debian: Minimum LibreOffice Packages to Convert docx Files to pdf in Headless Mode

I'm developing a Docker container with a Debian 10 base image (this is a fixed dependency) that converts docx files to pdf using LibreOffice (soffice) in headless mode. I've got it working with the following packages installed: libreoffice default-jre-headless libreoffice-java-common However, when built, the Docker container size is over 1GB. Ideally, I'd like the container to be as small as possible. Is there a way I can find out what are the minimum package requirements to get soffice to run in headless mode and convert the docx files to pdfs?