prepare first release with graceful shutdown + containerfile + push to

hub script

src/bot.rs

@@ -5,6 +5,7 @@ use crate::{
 };
 use serde::Deserialize;
 use std::{sync::Arc, time::Duration};
+use tokio_util::sync::CancellationToken;
 use tracing::{error, info, instrument};
 
 #[derive(Deserialize, Debug)]
@@ -54,13 +55,23 @@ impl Bot {
     pub async fn start(
         &self,
         mut rx: tokio::sync::mpsc::Receiver<WebhookType>,
+        shutdown: CancellationToken,
     ) -> anyhow::Result<()> {
         info!("Bot started");
 
         let sem = Arc::new(tokio::sync::Semaphore::new(self.max_concurrent));
         let mut tasks = tokio::task::JoinSet::new();
 
-        while let Some(wb) = rx.recv().await {
+        loop {
+            let wb = tokio::select! {
+                biased;
+                _ = shutdown.cancelled() => break,
+                msg = rx.recv() => match msg {
+                    Some(wb) => wb,
+                    None => break,
+                },
+            };
+
             // Drain completed tasks to avoid the JoinSet growing unbounded
             while let Some(res) = tasks.try_join_next() {
                 if let Err(e) = res {
@@ -82,7 +93,7 @@ impl Bot {
         // properly before returning
         tasks.join_all().await;
 
-        info!("Bot shutting down, channel closed");
+        info!("Bot shutting down complete");
         Ok(())
     }