刪除映像檔
列出目前所有的映像檔
$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
kejyun/ubuntu1804docker 0.1 a54db3844855 21 hours ago 144MB
kejyun/ubuntu1804 0.1 a54db3844855 21 hours ago 144MB
kejyun/ubuntu 0.1 61853cc80834 21 hours ago 140MB
kejyun/ubuntu1804 v0.1 317f7e8c2321 22 hours ago 137MB
kejyun/ubuntu1804 latest 8c8347f200e8 22 hours ago 137MB
laradock_nginx latest 2586012f8dad 47 hours ago 26.7MB
laradock_workspace latest 8f74a5ffe174 47 hours ago 721MB
laradock_mysql latest 61a7a3f27ca2 47 hours ago 445MB
ubuntu 16.04 5e8b97a2a082 8 days ago 114MB
ubuntu 18.04 113a43faa138 8 days ago 81.2MB
ubuntu latest 113a43faa138 8 days ago 81.2MB
nginx alpine bc7fdec94612 8 days ago 18MB
nginx latest cd5239a0906a 8 days ago 109MB
mysql latest a8a59477268d 5 weeks ago 445MB
redis latest bfcb1f6df2db 6 weeks ago 107MB
laradock/php-fpm 2.0-72 22f190ba7b61 5 months ago 384MB
laradock/workspace 2.0-72 69a57f6aca78 5 months ago 721MB
刪除本地映像檔
$ docker image rm [選項] <映像檔1> [<映像檔2> ...]
<映像檔1> 可以是 IMAGE ID、映像檔名稱
移除 nginx:alpine 映像檔
映像檔名稱 為 <資源庫名稱 REPOSITORY>:<標籤 TAG>
$ docker image rm nginx:alpine
Untagged: nginx:alpine
Untagged: nginx@sha256:4a85273d1e403fbf676960c0ad41b673c7b034204a48cb32779fbb2c18e3839d
$ docker image rm nginx:latest
Untagged: nginx:latest
Untagged: nginx@sha256:3e2ffcf0edca2a4e9b24ca442d227baea7b7f0e33ad654ef1eb806fbd9bedcf0
Deleted: sha256:cd5239a0906a6ccf0562354852fae04bc5b52d72a2aff9a871ddb6bd57553569
Deleted: sha256:530991fd6d0f08206190b1bf71ef51b4534365669785cb461c24d62083f67bb3
Deleted: sha256:725a91602941a09ec4a9ff02dcfde78c2ada44b28780aecd0dfd64d2b2817509
Untagged 和 Deleted
Untagged
還有其他不同標籤的映像檔有指定到此映像檔，所以移除的話，僅是將這個標籤移除
Deleted
映像檔所有的標籤皆沒有指定到此刪除的映像檔，所以會直接將此映像檔做刪除
container 之間會做互相依賴，若要刪除的映像檔有執行中的 container 那麼此映像檔就不能被刪除，若要真的完整刪除的話，則必須要將這些相互依賴的 container 刪除後，才可以刪除映像檔
批次刪除映像檔
$ docker image rm $(docker image ls -q redis)
Untagged: redis:latest
Untagged: redis@sha256:87275ecd3017cdacd3e93eaf07e26f4a91d7f4d7c311b2305fccb50ec3a1a8cd
Deleted: sha256:bfcb1f6df2db8a62694aaa732a3133799db59c6fec58bfeda84e34299e7270a8
Deleted: sha256:1b2300a82ed1f2881032ae2fa5b6d570297faf1906e054ef1459e356b3fcc569
Deleted: sha256:2ed7c0db59ecf786fa13c85e88489c3c0e5eadc1a24c9da38a62b9f564aac880
Deleted: sha256:faa8313d6bff25bcd501468b3ebb45e3d002454fe7d3a6d72dba77dce0a64d55
Deleted: sha256:ba4122a82d251fc6b432237079bbb0d645ef47049e800c1f9e56d61fc8e823cf
Deleted: sha256:2425077af8e28faee2557ddabb85a00938d81d13cf8c41897958d07aaeaa39d2
Deleted: sha256:ba291263b0854589e32a6fa7775c898d662ed835cd686ac9ac2d33dcefa91a39
$ docker image rm $(docker image ls -q ubuntu)
Untagged: ubuntu:16.04
Untagged: ubuntu@sha256:b050c1822d37a4463c01ceda24d0fc4c679b0dd3c43e742730e2884d3c582e3a
Deleted: sha256:5e8b97a2a0820b10338bd91674249a94679e4568fd1183ea46acff63b9883e9c
Deleted: sha256:ef572e1ba2ecca900f0ec3db00e997de12dd380ce3e360b5813fd75920232359
Deleted: sha256:98fc4d5421178c7be7d5718d2d44abba8053dc5c712e51658fe5b872675b4f7a
Deleted: sha256:7b2cc05dfd889e28234f8831c80ac20cf299d5bbebbbac013f8f7d2b7abc0d65
Deleted: sha256:6b0187d1cdff63eb5966ac72bf4ccd96150586c1409eb858bb98783f02018ee7
Deleted: sha256:644879075e24394efef8a7dddefbc133aad42002df6223cacf98bd1e3d5ddde2
Error response from daemon: conflict: unable to delete 113a43faa138 (cannot be forced) - image has dependent child images