message: fixes for makefile for mac
diff: -PATH:=./node_modules/.bin:$(PATH)
  SOURCE_FILES:=$(shell find src/ -type f -name '*.ts')
  -PORT:=8531
  -MYSQL_HOST:=127.0.0.1
  -MYSQL_PASSWORD:=
  -MYSQL_USER:=root
  -MYSQL_DATABASE:=a12nserver
  +PORT?=8531
  +MYSQL_HOST?=127.0.0.1
  +MYSQL_PASSWORD?=
  +MYSQL_USER?=root
  +MYSQL_DATABASE?=a12nserver
  DOCKER_IMAGE_NAME:=a12n-server
  @@ -44,10 +43,10 @@ start-dev:
  ts-node src/app.js
  watch:
  - tsc --watch
  + ./node_modules/.bin/tsc --watch
  dist/build: $(SOURCE_FILES)
  - tsc
  + ./node_modules/.bin/tsc
  @# Touching this file so Makefile knows when it was last built.
  touch dist/build
  