build(docker): add docker and docker-compose files

docker/nginx/default.conf

@@ -0,0 +1,22 @@
+server {
+    index index.php index.html;
+    server_name symfony_example_app;
+    error_log  stderr debug;
+    access_log  stderr;
+    listen   80;
+    root /var/www/html/public;
+
+    location / {
+        try_files $uri /index.php$is_args$args;
+    }
+
+    location /build {
+        try_files $uri /$uri;
+    }
+
+    location ~ ^/.+\.php(/|$) {
+        fastcgi_pass php-fpm:9000;
+        include fastcgi_params;
+        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
+    }
+}