我正在使用docker-compose作为sentry on-premise安装的一部分。
下面是我的docker-compose. yml的nginx部分的片段。这是提供给我的nginx容器配置。你会注意到它有一个现有的卷挂载。

nginx:
    << : *restart_policy
    ports:
      - '$SENTRY_BIND:80/tcp'
    image: 'nginx'
    volumes:
      - type: bind
        read_only: true
        source: ./nginx
        target: /etc/nginx
    depends_on:
      - web
      - relay

问题是，我需要额外的挂载，以便我的nginx配置正常工作。我需要能够挂载SSL证书。当我对nginx部分进行以下修改时...

nginx:
    << : *restart_policy
    ports:
      - '$SENTRY_BIND:80/tcp'
    image: 'nginx'
    volumes:
      - type: bind
        read_only: true
        source: ./nginx
        target: /etc/nginx
      - type: bind
        read_only: true
        source: ./certs
        target: /etc/nginx/certs
    depends_on:
      - web
      - relay
  relay:

...我在使用docker-compose up -d时得到以下错误：

Creating sentry_onpremise_nginx_1                                    ... error
Creating sentry_onpremise_ingest-consumer_1                          ... done
Creating sentry_onpremise_subscription-consumer-events_1             ... done
me/brad/repo/onpremise/certs" to rootfs at "/var/lib/docker/overlay2/357f60b96e866d8dd84d657f7cad55fad76420a61cc8cb35a10ebcb13bcf4060/merged/etc/nginx/certs" caused: mkdir /var/lib/docker/overlay2/357f60b96e866d8dd84d657f7cad55fad76420a61cc8cb35a10ebcb13bcf4060/merged/etc/nginx/certs: read-only file system: unknown

ERROR: for nginx  Cannot start service nginx: OCI runtime create failed: container_linux.go:367: starting container process caused: process_linux.go:495: container init caused: rootfs_linux.go:60: mounting "/home/brad/repo/onpremise/certs" to rootfs at "/var/lib/docker/overlay2/357f60b96e866d8dd84d657f7cad55fad76420a61cc8cb35a10ebcb13bcf4060/merged/etc/nginx/certs" caused: mkdir /var/lib/docker/overlay2/357f60b96e866d8dd84d657f7cad55fad76420a61cc8cb35a10ebcb13bcf4060/merged/etc/nginx/certs: read-only file system: unknown
ERROR: Encountered errors while bringing up the project.

任何帮助都将不胜感激。我对docker/compose不是很有经验。
编辑：值得一提的是，当我运行docker exec -it sentry_onpremise_nginx_1 /bin/bash并试图在容器内创建一个目录时，我会遇到类似的错误：

root@83afd0c563de:/etc/nginx# mkdir certs
mkdir: cannot create directory 'certs': Read-only file system