diff --git a/client/main.go b/client/main.go
index 6e08a59..8cae13a 100644
--- a/client/main.go
+++ b/client/main.go
@@ -18,9 +18,7 @@ const (
 	REG_END       = 255
 )
 
-const HOST = "localhost:8080"
-
-var u = url.URL{Scheme: "ws", Host: HOST, Path: "/keys"}
+var u = url.URL{Scheme: "wss", Host: "keys.svitan.dev", Path: "/keys"}
 
 func main() {
 	var conn *websocket.Conn
diff --git a/server/Dockerfile b/server/Dockerfile
index f9a1612..a1ff23e 100644
--- a/server/Dockerfile
+++ b/server/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.23
+FROM golang:1.24
 
 WORKDIR /app
 COPY . .
@@ -7,4 +7,5 @@ RUN echo "" > .env
 RUN go get -v .
 RUN go install -v .
 
+EXPOSE 8080
 CMD ["server"]
diff --git a/server/main.go b/server/main.go
index 71987a0..6543310 100644
--- a/server/main.go
+++ b/server/main.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"net/http"
 	"os"
+	"path"
 	"syscall"
 	"time"
 
@@ -44,6 +45,19 @@ func main() {
 		log.Fatal("TOKEN is not defined")
 	}
 
+	f, err := os.OpenFile(path.Join(keyDir, "startup"), syscall.O_CREAT|syscall.O_APPEND|syscall.O_WRONLY, 0644)
+	if err != nil {
+		log.Fatalf("KEY_DIR %s is not writable (%v)\n", keyDir, err)
+	}
+	_, err = f.Write([]byte(fmt.Sprintf("%s\n", time.Now().Format(TimeFormat))))
+	if err != nil {
+		log.Fatalf("KEY_DIR test file couldn't be written to (%v)\n", err)
+	}
+	err = f.Close()
+	if err != nil {
+		log.Fatalf("KEY_DIR test file couldn't be closed (%v)\n", err)
+	}
+
 	app := echo.New()
 	app.Logger.SetLevel(log.INFO)
 
@@ -135,7 +149,6 @@ func keys(c echo.Context) error {
 	ws, err := upgrader.Upgrade(c.Response(), c.Request(), nil)
 	if err != nil {
 		return err
-
 	}
 	defer ws.Close()