feat: add support for the docker image

Makefile

@@ -14,13 +14,22 @@ $(if $(UNKNOWN),$(error unknown font type in ./MonoLisa: $(UNKNOWN)))
 msg = $(call tprint,{a.bold}==>{a.end} {a.b_magenta}$(1){a.end} {a.bold}<=={a.end})
 
 ## patch | add nerd fonts to MonoLisa
+ifdef DOCKER
+.PHONY: patch
+patch: $(foreach ml-type,$(ML_TYPES),patch-$(ml-type)-docker)
+else
 .PHONY: patch
 patch: $(addprefix patch-,$(ML_TYPES))
+endif
 
 patch-%: ./bin/font-patcher
 	$(call msg, Patching MonoLisa $* Files)
 	@./bin/patch-monolisa $* $(ARGS)
 
+patch-%-docker: ./bin/font-patcher
+	$(call msg, Patching Monolisa $* Files w/Docker)
+	@./bin/patch-monolisa-docker $* $(ARGS)
+
 ## update-fonts | move fonts and update fc-cache
 .PHONY: update-fonts
 update-fonts:

README.md

@@ -22,6 +22,8 @@ sudo pacman -S fontforge
 
 You can also download the version for your system from the releases in the fontforge [repo](https://github.com/fontforge/fontforge).
 
+If you prefer to use `docker` rather than install `fontforge` you can just add `DOCKER=1` to calls to `make patch`.
+
 ## Downloading MonoLisa
 
 Once you have acquired MonoLisa, follow the link in your email to download it.
@@ -45,7 +47,6 @@ you can easily apply the nerd font patches with `make`.
 
 To patch all font types use the default `patch` rule.
 
-
 ```bash
 make
 ```

bin/patch-monolisa-docker

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+# set -e
+# docker exits with code 1?
+
+exts=(otf ttf woff woff2)
+ext=$1
+shift
+fp_args=$@
+
+if [[ -z $ext ]]; then
+	echo "please provide an extension"
+	exit 1
+fi
+
+if [[ ! " ${exts[@]} " =~ " ${ext} " ]]; then
+	echo "$ext is not a valid extension"
+	echo "Please choose one of the below:"
+	printf '%s\n' "${exts[@]}"
+	exit 1
+fi
+
+echo "Patching all fonts with ext -> $ext"
+echo "Using the following arguments for font-patcher $fp_args"
+
+docker run --rm -v "$(pwd)/MonoLisa/$ext:/in" -v "$(pwd)/patched/$ext:/out" nerdfonts/patcher $fp_args
+
+exit 0