diff --git a/cmd/code2img/main.go b/cmd/code2img/main.go
index f7d9466..11d4fd8 100644
--- a/cmd/code2img/main.go
+++ b/cmd/code2img/main.go
@@ -57,10 +57,10 @@ func main() {
 			log.Printf("[%s]: write screenshot error %v", imgfile, err)
 			return
 		}
-		c.String(http.StatusOK, "https://golang.design/api/v1/code2img/data/images/"+id+".png")
+		c.String(http.StatusOK, "https://"+c.Request.Host+"/api/v1/code2img/data/images/"+id+".png")
 	})
 
-	s := &http.Server{Addr: ":8080", Handler: router}
+	s := &http.Server{Addr: ":80", Handler: router}
 	go func() {
 		if err := s.ListenAndServe(); err != nil && err != http.ErrServerClosed {
 			log.Fatalf("listen: %s\n", err)
diff --git a/code2img b/code2img
new file mode 100755
index 0000000..99c4eae
Binary files /dev/null and b/code2img differ
diff --git a/docker/Dockerfile b/docker/Dockerfile
index be33db3..6ca8d31 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -11,4 +11,5 @@ RUN apt update && apt install dumb-init
 ENTRYPOINT ["dumb-init", "--"]
 WORKDIR /app
 COPY . .
+EXPOSE 80
 CMD ["/app/code2img"]
diff --git a/docker/docker-compose.yml b/docker/docker-compose.yml
index 09cdeda..47bbafe 100644
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -13,5 +13,11 @@ services:
     image: code2img
     cap_add:
       - SYS_PTRACE # for debugging
-    ports:
-      - "5656:8080"
\ No newline at end of file
+    deploy:
+      replicas: 1
+    networks:
+      - traefik_proxy
+networks:
+  traefik_proxy:
+    external: true
+