Fixed the issues pointed out in the review

- Exclude compose.yaml from output
- Remove a variable "dir" that are no longer needed

Author: koron

_config.yml

@@ -9,6 +9,7 @@ exclude:
   - 'README.md'
   - 'vendor'
   - 'eyecatch.rb'
+  - 'compose.yaml'
 include:
   - '.well-known'
 

_scripts/docker_jekyll_serve

@@ -10,6 +10,4 @@
 
 set -eu
 
-dir="$(pwd)"
-
 docker compose run -d --rm -p 4000:4000 jekyll jekyll server -H 0.0.0.0 "$@"