Run tests with Docker

.travis.yml

@@ -1,4 +1,4 @@
-dist: trusty
+sudo: required
 
 language: php
 
@@ -7,16 +7,23 @@ php:
   - 7.1
   - 7.0
   - 5.6
-  - 5.5
-  - 5.4
-  - hhvm
 
-before_script:
-  - pip install --user codecov
-  - composer self-update && composer install --dev
+services:
+  - docker
+
+before_install:
+  # need at least version 17.05, for ARG support in FROM
+  - sudo apt-get update
+  - sudo apt-get -y -o Dpkg::Options::="--force-confnew" install docker-ce
+
+install:
+  - make up PHP=$(phpenv version-name)
 
 script:
-  - ./vendor/bin/phpunit
+  - make test PHP=$(phpenv version-name) UP=0 DOWN=0
 
 after_success:
-  - codecov
+  - bash <(curl -s https://codecov.io/bash)
+
+after_script:
+  - make down PHP=$(phpenv version-name)

makefile

@@ -1,4 +1,6 @@
 PHP ?= '7.2'
+UP ?= 1
+DOWN ?= 1
 
 docs:
 	wget http://apigen.org/apigen.phar