Serve static pages from minio through caddy

• This is in responce to this ticket: ecosystem: Add a caddy plugin to serve static files from Minio server. · Issue #3161 · minio/minio
• See also the same setup for Nginx by @harshavardhana
• Note: caddy can't errors from reverse proxy (i.e. 404, 500, etc) as of v0.11.1
  • see ticket for more info.

Assumptions:

• caddy version (tested): 0.11.1
• minio version (tested): `2019-01-10T00:21:20Z'
• world facing domain URL is: http://localtest.me
  • add to hosts file if paranoid

  127.0.0.1       localtest.me
  

• minio data storage directory: /data
• minio static website bucket: /site
• minio static website bucket index.html object: site/index.html
• url for the local minio site/index.html instance object: http://localhost:9000/site/index.html
• mc (the minio client) is configured as such for this minio instance:

  mc config host add myminio http://127.0.0.1:9000 <AccessKey> <SecretKey>
  

General procedure:

1. start mnio server:

   ./minio server --address localhost:9000 /data
   

2. create site bucket in minio

   mc mb myminio/site
   

3. configure object folder for download policy

   mc policy download myminio/site
   

4. copy files into site

   # example
   mc cp --recursive ~/MyHugoProject/public/* myminio/site/
   

5. configure caddy config file Caddyfile

   http://localtest.me/myhugosite {
       rewrite / {
           r ^.*/$
           to {path} {path}/ {dir}/index.html
           }
       proxy / http://localhost:9000/site/ {
           #transparent #superfluious
       }
   }
   

6. restart caddy
7. test static site deployment: http://localtest.me/myhugosite