add Docker and Drone boilerplate

Makefile

@@ -0,0 +1,35 @@
+### Variables
+DOCKER_COMPOSE_CMD := docker-compose -f docker/docker-compose.local.yml
+COMPOSER := composer
+PHPUNIT := vendor/bin/phpunit
+
+.PHONY: build up down logs install test phpunit open_coverage
+
+
+### Container management
+build:
+	${DOCKER_COMPOSE_CMD} build
+
+up:
+	${DOCKER_COMPOSE_CMD} up --build --detach
+
+down:
+	${DOCKER_COMPOSE_CMD} down
+
+logs:
+	${DOCKER_COMPOSE_CMD} logs -f || true
+
+
+### Dependency management
+install:
+	${COMPOSER} install
+
+
+### Test suites
+test: phpunit
+
+phpunit:
+	${PHPUNIT} -c phpunit.xml
+
+open_coverage:
+	${BROWSER} coverage/index.html