Combine multiple toml files for starship

update-starship-config.sh

#!/bin/bash

set -eEuo pipefail

CONF_FILE="$HOME/.config/starship.toml"
CONF_D="$HOME/.config/starship.d"
TEMPFILE="$(mktemp)"

starship preset -o "$CONF_D/99-nerd-font-symbols.toml" nerd-font-symbols

# toml-merge always requires an "original toml" and applies patch-files (-p)
docker run --rm --network=none --user "$(id -u):$(id -g)" -v "$CONF_D:/conf:ro" -w /conf ghcr.io/mesosphere/toml-merge:v0.2.0 -p '*.toml' '10-global.toml' > "$TEMPFILE"
sed -i '1 i # Auto-generated by update-starship-config, do not edit' "$TEMPFILE"

mv "$TEMPFILE" "$CONF_FILE"