ensure font-patcher options are handled correctly by docker entry point

bin/scripts/docker-entrypoint.sh

@@ -1,19 +1,25 @@
 #!/bin/sh
 
-skip=false
 args=""
 
-# Discard --out option
-for i; do
-    [ "${i}" != "${i% *}" ] && i="\"$i\""
-    if [ "$i" = "--out" ] || [ "$i" = "-o" ]; then
-        skip=true
-    else
-        if [ "$skip" = false ] || [ "$i" == "-*" ]; then
-            args="$args $i"
-        fi
-        skip=false
-    fi
+# check all args for --out or -o
+while [ "$#" -gt 0 ]; do
+	if [ "$1" = "-out" ] || [ "$1" = "--outputdir" ];then
+		# move past the option
+		shift
+		# and the value if there is one
+		case "$1" in
+			-*) continue ;;
+			*) shift $(( $# > 0 ? 1 : 0 )) ;;
+		esac
+		continue
+	fi
+	args="$args $1"
+	shift
 done
 
-for f in /in/*.otf /in/*.ttf /in/*.woff /in/*.eot; do [ -f $f ] && fontforge -script /nerd/font-patcher -out /out $args $f; done
+printf "Running with options:\n%s\n" "$args"
+
+# shellcheck disable=SC2086
+for f in /in/*.otf /in/*.ttf /in/*.woff /in/*.eot; do [ -f "$f" ] && fontforge -script ~/nerd-fonts/font-patcher -out /out $args $f; done
+