Ошибка при запуске контейнера Docker

Не запускается docker-контейнер.

docker container stop mailtest
docker container rm mailtest

docker run \
    --name mailtest\
    -p 143:31143\
     -p 993:31993\
    mailtest


Error response from daemon: No such container: mailtest
Error response from daemon: No such container: mailtest
Unable to find image 'mailtest:latest' locally
docker: Error response from daemon: pull access denied for mailtest, repository does not exist or may require 'docker login': denied: requested access to the resource is denied.
See 'docker run --help'.

Dockerfile:

FROM dovecot/dovecot:latest
COPY ./config/misc.conf /etc/dovecot/conf.d/misc.conf
EXPOSE 143:31143
EXPOSE 993:31993

docker-compose.yml:

version: '3'
services:
  mailtest:
    build: .
    container_name: mailtest
    restart: on-failure
    ports:
      - "143:31143"
      - "993:31993"