Made the Docker image Alpine-based. Should work better when running Async in a Cron environment.

Also removed compatibility with PHP 7.2.

Dockerfile

@@ -1,11 +1,17 @@
-FROM php:7.3-cli-buster
+FROM php:7.3-alpine
 
-RUN apt-get update &&\
-    apt-get install --no-install-recommends --assume-yes --quiet procps ca-certificates curl git unzip &&\
-    rm -rf /var/lib/apt/lists/*
+# FOR ALPINE
+# Install git and bash and procps
+RUN apk add git bash procps
+RUN apk add --no-cache --update --virtual .phpize-deps $PHPIZE_DEPS
 
-# Install Redis
-RUN pecl install redis-5.1.1 && docker-php-ext-enable redis
+# FOR DEBIAN/UBUNTU
+#RUN apt-get update &&\
+#    apt-get install --no-install-recommends --assume-yes --quiet procps ca-certificates curl git unzip &&\
+#    rm -rf /var/lib/apt/lists/*
+
+# Install Redis and XDebug
+RUN pecl install redis && docker-php-ext-enable redis
 RUN pecl install xdebug && docker-php-ext-enable xdebug
 
 # Install Composer

composer.json

@@ -13,7 +13,7 @@
     }
   ],
   "require": {
-    "php": ">=7.2.0",
+    "php": ">=7.3.0",
     "fuzeworks/core": "~1.2.0",
     "ext-json": "*",
     "ext-redis": "*"

test/system/ParallelSuperVisorTest.php

@@ -64,7 +64,6 @@ class ParallelSuperVisorTest extends TestCase
     public function setUp(): void
     {
         // Load the TaskStorage so temporary tasks can be stored
-        // Tasks shall NOT be reset between individual tests automatically
         $tasks = new Tasks();
         $this->taskStorage = $tasks->getTaskStorage();
         $this->taskStorage->reset();