Replace Lando w/ regular Docker

Author: AkenRoberts

.docker/php/Dockerfile

@@ -0,0 +1,16 @@
+FROM php:7.2-cli
+
+COPY --from=composer:2 /usr/bin/composer /usr/bin/composer
+
+RUN apt-get update \
+    && apt-get install -y git zip unzip zlib1g-dev libzip-dev \
+    && apt-get -y autoremove \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+RUN docker-php-ext-install zip \
+    && docker-php-ext-install pcntl \
+    && docker-php-ext-install bcmath
+
+RUN pecl install mongodb \
+    && docker-php-ext-enable mongodb

.lando.yml

@@ -95,10 +95,11 @@ XML mapping xsd schemas are also versioned and can be used by version suffix:
 
 To set up and run the tests, follow these steps:
 
-- Install [Lando](https://docs.devwithlando.io/), a Docker-based dev environment tool
-- Run `lando start` from the project root
-- Make sure you `composer install` project dependencies
-- Run `lando php bin/phpunit -c tests`
+- Install [Docker](https://www.docker.com/) and ensure you have `docker-compose`
+- From the project root, run `docker-compose up -d` to start containers in daemon mode
+- Enter the container via `docker-compose exec php bash` and navigate to the root directory: `cd /var/www`
+- Install Composer dependencies via `composer install`
+- Run the tests: `bin/phpunit -c tests/`
 
 ### Running the Example
 

README.md

@@ -0,0 +1,20 @@
+services:
+  php:
+    build: .docker/php
+    volumes:
+      - .:/var/www
+    environment:
+      MONGODB_SERVER: 'mongodb://mongodb:27017'
+    tty: true
+    stdin_open: true
+
+  mysql:
+    image: mysql:8.0
+    environment:
+      MYSQL_ROOT_PASSWORD: de_root_password
+      MYSQL_DATABASE: de_testing
+      MYSQL_USER: de_user
+      MYSQL_PASSWORD: de_password
+
+  mongodb:
+    image: mongo