decrement

.github/workflows/build-image.yml

@@ -21,7 +21,7 @@ jobs:
           images: |
             ghcr.io/${{ github.repository_owner }}/tcp-echoserver
           tags: |
-            type=raw,value=latest
+            type=raw,value=decrement
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3

README.md

@@ -4,7 +4,7 @@ For personal test.
 
 Return based on input
 
-- number: return number + 1
+- number: return number - 1
 - etc: return itself
 
 ### env

src/main.rs

@@ -3,7 +3,7 @@ use std::env;
 use tokio::io::{AsyncReadExt, AsyncWriteExt};
 use tokio::net::TcpListener;
 
-// 숫자면 +1
+// 숫자면 -1
 // 글자면 그대로
 #[tokio::main]
 async fn main() {
@@ -27,7 +27,7 @@ async fn main() {
                         match std::str::from_utf8(&buf[..n]) {
                             Ok(received_str) => {
                                 if let Ok(num) = received_str.trim().parse::<i32>() {
-                                    let response = (num + 1).to_string();
+                                    let response = (num - 1).to_string();
                                     socket.write_all(response.as_bytes()).await.unwrap();
                                 } else {
                                     socket.write_all(received_str.as_bytes()).await.unwrap();