docker rmi 관련 문의입니다.

안녕하세요 선생님.

docker 주요 명령 익히기6(컨테이너 다루는 다양한 옵션)
8분:25초 에서

해당 이미지를 제하려고하면
하기와 같은 오류가 뜨면서 삭제가 안되는데, 조치할수있는 사항이 있을까요?..

ubuntu@ip-172-31-38-226:~/2021_DEV_HTML$ docker system df

TYPE TOTAL ACTIVE SIZE RECLAIMABLE

Images 4 4 305.5MB 0B (0%)

Containers 11 1 28B 26B (92%)

Local Volumes 0 0 0B 0B

Build Cache 0 0 0B 0B

ubuntu@ip-172-31-38-226:~/2021_DEV_HTML$ docker images

REPOSITORY TAG IMAGE ID CREATED SIZE

ubuntu latest b6548eacb063 12 days ago 77.8MB

httpd alpine 489db2792d7f 13 days ago 59.3MB

httpd latest a6ca7b52a415 3 weeks ago 168MB

hello-world latest 9c7a54a9a43c 7 months ago 13.3kB

ubuntu@ip-172-31-38-226:~/2021_DEV_HTML$ docker rmi httpd:latest

Error response from daemon: conflict: unable to remove repository reference "httpd:latest" (must force) - container 919738d198d7 is using its referenced image a6ca7b52a415

ubuntu@ip-172-31-38-226:~/2021_DEV_HTML$

감사합니다..

안녕하세요. 자문자답입니다.

ubuntu@ip-172-31-38-226:~/2021_DEV_HTML$ docker ps -a

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

3147dd613026 httpd:alpine "httpd-foreground" 15 minutes ago Up 5 minutes 0.0.0.0:80->80/tcp, :::80->80/tcp apacheweb

919738d198d7 httpd "httpd-foreground" 3 hours ago Exited (0) 3 hours ago relaxed_jemison

15181a2871cc httpd "httpd-foreground" 7 days ago Exited (0) 7 days ago nervous_greider

d3e9b6736e2a ubuntu "/bin/bash" 7 days ago Exited (137) 7 days ago suspicious_khayyam

5981cf8b101f ubuntu "/bin/bash" 7 days ago Exited (137) 7 days ago vibrant_hermann

59888bed404a ubuntu "/bin/bash" 7 days ago Exited (0) 7 days ago myubuntu3

2a4e171f1d33 ubuntu "/bin/bash" 7 days ago Exited (0) 7 days ago friendly_mendel

f32f9cd1c2ea ubuntu "/bin/bash" 7 days ago Exited (0) 7 days ago myubuntu

2b41d9e5aa41 ubuntu "/bin/bash" 7 days ago Exited (0) 7 days ago charming_kepler

b2b8056f7331 ubuntu "/bin/bash" 7 days ago Exited (0) 7 days ago elastic_cohen

fdf144797e30 hello-world "/hello" 7 days ago Exited (0) 7 days ago hardcore_hypatia

ubuntu@ip-172-31-38-226:~/2021_DEV_HTML$ docker rm 919

919

ubuntu@ip-172-31-38-226:~/2021_DEV_HTML$ docker rm 151

151