Run composer install during container startup

Closes #1

README.md

@@ -1,4 +1,3 @@
 1. Clone this repository
 2. Copy `src/.env.example` to `src/.env`
-3. Run `cd src && composer install`
-4. Run `docker-compose up`
+3. Run `docker-compose up`

docker-entrypoint.sh

@@ -94,6 +94,7 @@ if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ]; then
 	# 		fi
 	# 	done
 	# fi
+	composer install
 fi
 
 exec "$@"