有任何想法吗？
该服务之前已启动，但现在我收到此“/etc/Caddyfile：是一个目录”消息并且服务退出。
$ docker-compose -f docker-compose-linux.yml up caddy
Starting server_applications_1 ... done
server_workspace_1 is up-to-date
server_php-fpm_1 is up-to-date
Starting server_caddy_1 ... done
Attaching to server_caddy_1
caddy_1 | http plugins loaded: git
caddy_1 | 2020/06/22 06:22:18 loading Caddyfile via flag: read /etc/Caddyfile: is a directory
server_caddy_1 exited with code 1
球童服务 dockerfile：
FROM zuohuadong/caddy:alpine
MAINTAINER Huadong Zuo <admin@zuohuadong.cn>
ARG plugins="cors"
WORKDIR /var/www/platform/public
CMD ["/usr/bin/caddy", "-conf", "/etc/Caddyfile"]
Caddy 服务容器 yml：其中 CADDY_CUSTOM_CADDYFILE=./caddy/Caddyfile
卷：
- ${CADDY_CUSTOM_CADDYFILE}:/etc/Caddyfile
Caddyfile 位于正确的目录中
...server/caddy$ ll
total 16
drwxrwxr-x 2 …