Add local docker env setup

Author: benrowe

Dockerfile

@@ -0,0 +1,15 @@
+FROM php:8.4-cli
+
+RUN apt-get update && apt-get install -y \
+    git \
+    unzip \
+    $PHPIZE_DEPS \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN pecl install pcov && docker-php-ext-enable pcov
+
+RUN echo "pcov.enabled=1" > /usr/local/etc/php/conf.d/99-pcov.ini
+
+COPY --from=composer/composer:latest-bin /composer /usr/local/bin/composer
+
+WORKDIR /app

Makefile

@@ -0,0 +1,41 @@
+
+IMAGE_NAME := json-diff
+CURRENT_DIR := $(shell pwd)
+
+.PHONY: help
+
+# COLORS
+GREEN  := $(shell tput -Txterm setaf 2)
+YELLOW := $(shell tput -Txterm setaf 3)
+WHITE  := $(shell tput -Txterm setaf 7)
+RESET  := $(shell tput -Txterm sgr0)
+
+TARGET_MAX_CHAR_NUM=20
+
+## Show help
+help:
+	@echo ''
+	@echo 'Usage:'
+	@echo '  ${YELLOW}make${RESET} ${GREEN}<target>${RESET}'
+	@echo ''
+	@echo 'Targets:'
+	@awk '/^[a-zA-Z\-\_0-9]+:/ { \
+		helpMessage = match(lastLine, /^## (.*)/); \
+		if (helpMessage) { \
+			helpCommand = substr($$1, 0, index($$1, ":")-1); \
+			helpMessage = substr(lastLine, RSTART + 3, RLENGTH); \
+			printf "  ${YELLOW}%-$(TARGET_MAX_CHAR_NUM)s${RESET} ${GREEN}%s${RESET}\n", helpCommand, helpMessage; \
+		} \
+	} \
+	{ lastLine = $$0 }' $(MAKEFILE_LIST)
+
+## Start and log into the container
+up: build run
+
+## Build a new version of the container
+build:
+	@docker build -t $(IMAGE_NAME) .
+
+## Run the existing container
+run:
+	@docker run -it --rm -v "$(CURRENT_DIR):/app" $(IMAGE_NAME) bash