added docker and docker-compose

.dockerignore

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+node_modules
+vendor/
+composer.phar

.env.docker

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+APP_ENV=local
+APP_DEBUG=true
+APP_KEY=SomeRandomString
+APP_URL=http://0.0.0.0:8888
+
+# php mysql connection details
+DB_CONNECTION=mysql
+DB_HOST=mysql
+DB_PORT=3306
+DB_NAME=openchat
+DB_USER=openchat
+DB_PASSWORD=openchat 
+
+# Variables for Database creation in mysql container
+MYSQL_ROOT_PASSWORD=root_pass
+MYSQL_DATABASE=openchat
+MYSQL_USER=openchat
+MYSQL_PASSWORD=openchat

Dockerfile

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+FROM php:7.3-apache
+
+#Install git
+RUN apt-get update && apt-get install -y git zip unzip npm
+RUN docker-php-ext-install pdo pdo_mysql mysqli
+RUN a2enmod rewrite
+
+WORKDIR /var/www/html
+RUN php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
+RUN php composer-setup.php --install-dir=. --filename=composer
+COPY composer.json package.json ./
+RUN ./composer install
+RUN npm install
+COPY . /var/www/html/
+EXPOSE 80

docker-compose.yml

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+version: '3'
+services:
+  website:
+    image: openchat 
+    build: .
+    ports:
+      - 8888:80
+    env_file:
+      - .env.docker
+    depends_on:
+      - mysql
+  mysql:
+    image: mysql/mysql-server
+    command: --default-authentication-plugin=mysql_native_password
+    env_file:
+      - .env.docker
+    volumes:
+      - ./sql:/docker-entrypoint-initdb.d
+    ports:
+      - "3306:3306"