local-dev.sh

#!/bin/bash
set -e
proc=-1
while true; do
    if [ "$proc" -ne "-1"]; then
        kill -9 $proc
    fi
    make build
    make run &
    proc=$!
    inotifywait -qre close_write .
done

Makefile

.PHONY: build run local-dev

build: $(wildcard ./**/*)
	docker build -t myimage .

run:
	docker run myimage

local-dev:
	./local-dev.sh