Configure Minio with Caddy

Inspired by Configure NGINX Proxy for MinIO Server — MinIO Object Storage for Linux, I wanted to configure a Minio server with Caddy Reverse Proxy in front. For some reason, the configuration was more fickle than I expected, so here is the final result for reference.

Assumptions

Environment Variables

Make sure to set MINIO_BROWSER_REDIRECT_URL to the correct URL including the trailing slash

MINIO_BROWSER_REDIRECT_URL="https://minio.example.com/minio/ui/"

Caddyfile

The robots.txt and favicon.ico are optional, just left as an example of how you could handle these.

minio.example.com {
	handle /minio/ui/* {
		uri strip_prefix /minio/ui
		reverse_proxy localhost:9001
	}

	handle /robots.txt {
		respond "User-agent: *
Disallow: /"
	}

	handle /favicon.ico {
		respond 404
	}

	handle /* {
		reverse_proxy localhost:9000
	}
}