nginx 실습 관련 질문드립니다.

nginx 실습 시 

localhost:50000 으로 요청하면 작성한 index.html이 아닌 nginx 본 메인페이지가 뜨고

명령프롬프트 창에는 다음과 같이 나옵니다

Error response from daemon: OCI runtime create failed: container_linux.go:380: starting container process caused: process_linux.go:545: container init caused: rootfs_linux.go:76: mounting "/Users/multicampus/docker_lab/wp/index.html" to rootfs at "/usr/share/nginx/html/index.html" caused: mount through procfd: not a directory: unknown: Are you trying to mount a directory onto a file (or vice-versa)? Check if the specified host path exists and is the expected type.