For some reason, Adding 'MINIO_DOMAIN' to minio service's env config settings solved the issues.

Not sure why though?

minio:
    image: minio/minio
    networks:
      flink_network:
        aliases:
          - warehouse.minio
    container_name: minio
    ports:
      - "9000:9000"
      - "9001:9001"
    environment:
      - MINIO_ROOT_USER=minioadmin
      - MINIO_ROOT_PASSWORD=minioadmin
      - MINIO_DOMAIN=minio
    volumes:
      - minio-data:/data
    command: server /data --console-address ":9001"
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:9000/minio/health/live"]
      interval: 5s
      timeout: 3s
      start_period: 10s