Spring Boot application Docker Compose Logstash connection issue

Question

I'm trying to run a Spring Boot application using Docker Compose, which includes MongoDB, Elasticsearch, Kibana, and Logstash. However, when my Spring Boot app starts, it can't connect to Logstash and throws the following error:

13:18:21,297 |-WARN in net.logstash.logback.appender.LogstashTcpSocketAppender[logstash] - Log destination logstash/<unresolved>:5001: connection failed. java.net.ConnectException: Connection refused

Here's my docker-compose.yml:

services:
  mongodb:
    image: mongo
    container_name: mongodb
    environment:
      MONGO_INITDB_ROOT_USERNAME: xxx
      MONGO_INITDB_ROOT_PASSWORD: xxx
      MONGO_INITDB_DATABASE: xxx
    ports:
      - "1905:27017"
    volumes:
      - db_data:/data/db
    networks:
      - chooseone_network
      
  elasticsearch:
    image: docker.elastic.co/elasticsearch/elasticsearch:8.3.3
    container_name: elasticsearch
    environment:
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
      - "discovery.type=single-node"
      - xpack.security.enabled=false
    ports:
      - "9200:9200"
    volumes:
      - elasticsearch_data:/usr/share/elasticsearch/data
      - ./config/elasticsearch/config/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml:ro,Z
    networks:
      - elastic_network

  kibana:
    image: docker.elastic.co/kibana/kibana:8.3.3
    container_name: kibana
    ports:
      - "5601:5601"
    environment:
      ELASTICSEARCH_URL: http://elasticsearch:9200
      ELASTICSEARCH_HOSTS: '["http://elasticsearch:9200"]'
    depends_on:
      - elasticsearch
    networks:
      - elastic_network

  logstash:
    image: docker.elastic.co/logstash/logstash:8.3.3
    container_name: logstash
    volumes:
      - ./config/logstash/config/logstash.yml:/usr/share/logstash/config/logstash.yml:ro,Z
      - ./config/logstash/pipeline:/usr/share/logstash/pipeline:ro,Z
      - ./logs:/logs
    ports:
      - 5001:5000/tcp
    environment:
      LS_JAVA_OPTS: "-Xmx256m -Xms256m"
    command: bin/logstash -f /usr/share/logstash/pipeline/logstash.conf
    depends_on:
      - elasticsearch
    networks:
      - elastic_network

  chooseone:
    image: bertugmete/chooseone:0.0.2
    container_name: chooseone
    ports:
      - "8080:8080"
    environment:
      - SPRING_PROFILES_ACTIVE=prod
      - AWS_ACCESS_KEY=***  
      - AWS_SECRET_KEY=***
      - AWS_S3_REGION=xxx
      - AWS_S3_BUCKET_NAME=xxx
      - ARTIFACT_VERSION=0.0.2 
    depends_on:
      - mongodb
      - logstash
      - kibana
      - elasticsearch
    networks:
      - chooseone_network
      - elastic_network
    volumes:
      - ./logs:/app/logs

networks:
  elastic_network:
    driver: bridge
  chooseone_network:
    driver: bridge

volumes:
  elasticsearch_data:
    driver: local
  db_data:

Here is my logback-spring.xml configuration for Logstash:

<configuration>
    <include resource="org/springframework/boot/logging/logback/base.xml"/>
    
    <appender name="logstash" class="net.logstash.logback.appender.LogstashTcpSocketAppender">
        <destination>logstash:5001</destination>
        <encoder class="net.logstash.logback.encoder.LoggingEventCompositeJsonEncoder">
            <providers>
                <mdc />
                <logLevel />
                <loggerName />
                <threadName />
                <message />
                <logstashMarkers />
                <stackTrace />
                <pattern>
                    <pattern>
                        {
                        "app": "chooseone",
                        "environment": "${spring.profiles.active:-default}",
                        "timestamp": "%d{yyyy-MM-dd'T'HH:mm:ss.SSSZ}",
                        "errorCode": "%mdc{errorCode}",
                        "errorMessage": "%mdc{errorMessage}",
                        "uri": "%mdc{requestURI}",
                        "method": "%mdc{httpMethod}",
                        "status": "%mdc{responseStatus}",
                        "requestBody": "%mdc{requestBody}",
                        "responseBody": "%mdc{responseBody}",
                        "ip": "%mdc{clientIp}",
                        "timeTaken": "%mdc{timeTaken}"
                        }
                    </pattern>
                </pattern>
            </providers>
        </encoder>
    </appender>

    <root level="info">
        <appender-ref ref="logstash" />
    </root>
</configuration>

I've checked the Logstash service, and it seems to be running, but my Spring Boot app is still unable to connect.

Any suggestions on what could be causing the connection refusal?