format markdown docs with https://jez.io/pandoc-markdown-css-theme/ and add TOC sidebar

prettymd

#!/bin/sh
# format markdown docs with https://jez.io/pandoc-markdown-css-theme/ and add TOC sidebar
# removes the large margin at the top of the body
if [ $# = 0 -o "$1" = --help ]; then
    cat <<here
Usage: $(basename $(realpath "$0")) [--help] MARKDOWNFILE

Outputs HTML file from MARKDOWNFILE.
Formats MARKDOWNFILE with jez's template.
Shows a table of contents on the side.
here
    exit
fi
iid=$(mktemp)
docker build - --iidfile=$iid -q >/dev/null <<here
FROM debian:buster
RUN apt-get update \
    && apt-get install -y pandoc git
RUN mkdir /work /md \
    && cd /md \
    && git clone https://github.com/jez/pandoc-markdown-css-theme.git
RUN sed 's/^.*--title-margin-top:.*$/  --title-margin-top: 0;/' < /md/pandoc-markdown-css-theme/public/css/theme.css > /tmp/theme.css \
    && mv /tmp/theme.css /md/pandoc-markdown-css-theme/public/css
here
image=$(cat $iid)
dir=$(dirname $(realpath "$1"))
file=$(basename "$1")
config=/md/pandoc-markdown-css-theme
docker run --rm --read-only -v "$dir":/work $image pandoc \
        --katex \
        --from markdown+tex_math_single_backslash \
        --to html5+smart \
        --template=$config/template \
        --css=$config/public/css/theme.css \
        --css=$config/public/css/skylighting-solarized-theme.css \
        --self-contained \
        --resource-path=/work \
        --metadata=title-margin-top:0px \
        --variable=fontsize:72 \
        --toc \
        "/work/$file"

This uses docker for a spiffy "zero-install" experience...

added --rm to docker run