упаковал всё в docker-compose

lab3/consumer/app/src/main/java/dev/tishenko/consumer/Recv.java

@@ -10,7 +10,7 @@ public class Recv {
 
     public static void main(String[] argv) throws Exception {
         ConnectionFactory factory = new ConnectionFactory();
-        factory.setHost("localhost");
+        factory.setHost("rabbitmq");
         Connection connection = factory.newConnection();
         Channel channel = connection.createChannel();