add Docker configuration files and deployment guide

docker-compose.yml

@@ -0,0 +1,24 @@
+version: '3.8'
+
+services:
+  app:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: merchbay_admin_app
+    restart: unless-stopped
+    ports:
+      - "8080:80"
+    environment:
+      - APP_ENV=production
+      - APP_DEBUG=false
+      - DB_CONNECTION=mysql
+      - DB_HOST=${DB_HOST:-localhost}
+      - DB_PORT=${DB_PORT:-3306}
+      - DB_DATABASE=${DB_DATABASE:-merchbay_admin}
+      - DB_USERNAME=${DB_USERNAME:-root}
+      - DB_PASSWORD=${DB_PASSWORD:-}
+    volumes:
+      - ./storage:/var/www/html/storage
+      - ./public/uploads:/var/www/html/public/uploads
+    network_mode: bridge