упаковал всё в docker-compose

lab3/consumer/Dockerfile

@@ -0,0 +1,9 @@
+FROM gradle:8.13-jdk21
+
+WORKDIR /app
+
+COPY . .
+
+RUN gradle build --no-daemon
+
+CMD ["gradle", "run", "--no-daemon"]

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();