Update Dockerfile

Dockerfile

@@ -8,5 +8,5 @@ ENV CHAT_ID=5808621911
 # Install curl
 RUN apk --no-cache add curl
 
-# Run the curl command directly
-CMD curl -s -X POST "https://api.telegram.org/bot${BOT_TOKEN}/sendMessage" -d "chat_id=${CHAT_ID}" -d "text=Hello"
+# Run the curl command using shell form
+CMD sh -c 'curl -s -X POST "https://api.telegram.org/bot${BOT_TOKEN}/sendMessage" -d "chat_id=${CHAT_ID}" -d "text=Hello"'