docs: fix s3 docs for force-path-style (#1596)

Author: delsner

docs/authentication_and_upload.md

@@ -169,5 +169,5 @@ rattler-build upload s3 \
   --channel s3://my-bucket/my-channel \
   --region auto \
   --endpoint-url https://xyz.r2.cloudflarestorage.com \
-  --force-path-style true
+  --force-path-style
 ```

docs/reference/cli.md

@@ -50,6 +50,11 @@ This document contains the help content for the `rattler-build` command-line pro
 	- Possible values: `true`, `false`
 
 
+- `--config-file <CONFIG_FILE>`
+
+	The rattler-build configuration file to use
+
+
 - `--color <COLOR>`
 
 	Enable or disable colored output from rattler-build. Also honors the `CLICOLOR` and `CLICOLOR_FORCE` environment variable

src/upload/mod.rs

@@ -8,6 +8,7 @@ use opendal::{Configurator, Operator, services::S3Config};
 use reqwest_retry::{RetryDecision, RetryPolicy, policies::ExponentialBackoff};
 use std::{
     fmt::Write,
+    net::Ipv4Addr,
     path::{Path, PathBuf},
     time::{Duration, SystemTime},
 };
@@ -283,6 +284,15 @@ pub async fn upload_package_to_s3(
         .host_str()
         .ok_or_else(|| miette::miette!("Failed to get host from channel URL"))?;
 
+    if let Some(host_endpoint) = endpoint_url.host_str() {
+        if host_endpoint.parse::<Ipv4Addr>().is_ok() && !force_path_style {
+            return Err(miette::miette!(
+                "Endpoint URL {} (IPv4 address) cannot be used without path style, please use --force-path-style",
+                endpoint_url
+            ));
+        }
+    }
+
     let mut s3_config = S3Config::default();
     s3_config.root = Some(channel.path().to_string());
     s3_config.bucket = bucket.to_string();