added chmod to docu and connection_pool to gemfile

Author: adriandavidauer

Gemfile

@@ -10,3 +10,4 @@ group :jekyll_plugins do
 end
 
 gem 'github-pages'
+gem 'connection_pool', '2.5.0'

README.md

@@ -59,6 +59,7 @@ Working from a different OS, or just want to avoid installing dependencies? You
 You can build and execute the container by running the following command in the repository:
 
 ```bash
+chmod -R 777 .
 docker compose up
 ```