Improve docker test commands

README.md

@@ -51,7 +51,13 @@ composer test
 Run tests in a docker container:
 
 ```console
-composer docker
+composer docker:test
+```
+
+Run tests in a docker container using a specific PHP version:
+
+```console
+PHP_VERSION=7.1 composer docker:test
 ```
 
 ## ISBN ranges update
@@ -68,6 +74,12 @@ composer install
 composer run update-ranges
 ```
 
+Or using a docker container:
+
+```console
+composer docker:update-ranges
+```
+
 ## Changelog
 
 [See Github releases](https://github.com/biblys/isbn/releases)

composer.json

@@ -19,10 +19,10 @@
     "issues": "https://github.com/biblys/isbn/issues"
   },
   "require": {
-    "php": "^7.1 || ^7.2"
+    "php": "^7.1"
   },
   "require-dev": {
-    "phpunit/phpunit": "^7 || ^8",
+    "phpunit/phpunit": "^6 || ^7 || ^8",
     "guzzlehttp/guzzle": "^6.2"
   },
   "autoload": {
@@ -33,7 +33,11 @@
   "scripts": {
     "test": "vendor/bin/phpunit tests",
     "update-ranges": "php bin/update-ranges.php",
-    "docker:test": "docker run --rm --volume $PWD:/app --volume $COMPOSER_HOME:/tmp composer /bin/bash -c \"composer install && composer test\"",
-    "docker:update-ranges": "docker run --rm --volume $PWD:/app --volume $COMPOSER_HOME:/tmp composer /bin/bash -c \"composer install && composer update-ranges\""
+    "docker:install": 
+      "docker run --rm -v $PWD:/app prooph/composer:${PHP_VERSION:-7.4} install",
+    "docker:test": 
+      "@composer docker:install && docker run --rm -v $PWD:/app prooph/composer:${PHP_VERSION:-7.4} test",
+    "docker:update-ranges": 
+      "@composer docker:install && docker run --rm -v $PWD:/app prooph/composer:${PHP_VERSION:-7.4} update-ranges"
   }
 }