Move non-main files into util/ (#238)

.github/workflows/ci.yml

···
         tags: ${{ steps.meta.outputs.tags }}
         labels: ${{ steps.meta.outputs.labels }}
         target: main
+        file: util/Dockerfile
   deploy:
     runs-on: ubuntu-latest
     if: |

Dockerfile util/Dockerfile

···
 FROM caddy as web
 COPY . .
 RUN echo ":8000" > /etc/caddy/Caddyfile
-RUN echo "rewrite /repl /repl.html" >> /etc/caddy/Caddyfile
-RUN echo "rewrite /compilerepl /compilerepl.html" >> /etc/caddy/Caddyfile
+RUN echo "rewrite /repl /util/repl.html" >> /etc/caddy/Caddyfile
+RUN echo "rewrite /compilerepl /util/compilerepl.html" >> /etc/caddy/Caddyfile
+RUN echo "rewrite /style.css /util/style.css" >> /etc/caddy/Caddyfile
 RUN echo "log" >> /etc/caddy/Caddyfile
 RUN echo "file_server" >> /etc/caddy/Caddyfile
 

README.md

···
 or with [Cosmopolitan](https://justine.lol/cosmopolitan/index.html):
 
 ```bash
-./build-com
+./util/build-com
 
 # With a file
 ./scrapscript.com eval examples/0_home/factorial.scrap

fly.toml

···
 
 [build]
 build-target = "web"
+dockerfile = "util/Dockerfile"
 
 [http_service]
   internal_port = 8000