$ cmdocker add-wrapper node_15 /bin/bash node:15
$ node_15

$ npx wordpress-export-to-markdown --input elblogesmo.WordPress.2021-03-12.xml --year-folders true --month-folders true --post-folders=false --wizard false --output md

$ pipx install md2gemini

$ find md -name '*.md' -execdir md2gemini -l at-end -w '{}' ';' 
$ find md -name "*.md" -delete