Add Readme to the project

LICENSE

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+MIT License
+
+Copyright (c) 2019 PrestaShop
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

Readme.md

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+# Docker Internal images
+
+This repository provides additional Docker images for a quick deployment of PrestaShop.
+
+:warning: They are not designed for a production use.
+
+## Description
+
+These Docker files are based on the images [prestashop/prestashop](https://hub.docker.com/r/prestashop/prestashop/).
+With the Apache + PHP server already present, a MySQL server is installed and configured for a small environment (only one user per running website) to avoid too much memory consumption.
+PrestaShop is pre-installed during the build, and all existing languages are being added at the same time.
+
+For each PrestaShop major version, we chose the best compromise between reliability and speed of PHP.
+* PrestaShop 1.5 with PHP 5.6
+* PrestaShop 1.6 with PHP 7.1
+* PrestaShop 1.7 with PHP 7.2
+
+## Installation
+
+Images are being stored by default on Docker hub. They can be downloaded with:
+
+```bash
+docker pull prestashop/docker-internal-images[:tag]
+```
+
+Possible values for the tag are: `1.5`, `1.6`, `1.7`. Not providing this parameter will fallback on PrestaShop 1.7.
+
+## Runnig this image
+
+To run this images flawlessly on your environment, we advice you to find an available port on the host, then bind it
+to the container and the domain parameter.
+
+This example runs a pre-installed PrestaShop 1.7 on the port 8003 of the local machine:
+
+```bash
+docker run -ti -p 8003:80 -e PS_DOMAIN=localhost:8003 prestashop/docker-internal-images:1.7
+```