我想从Google Cloud Platform删除旧的未使用的AppEngine图像，因此不收取存储费用。
我可以从以下URL手动列出和删除为我的GCP AppEngine项目创建的图像： https://console.cloud.google.com/gcr/images/GOOGLE_CLOUD_PROJECT_ID
（显然，将GOOGLE_CLOUD_PROJECT_ID替换为适当的GCP项目ID。）
是否可以从命令行列出它们？例如通过gcloud吗？
这不符合我的预期：
$ gcloud compute images list --no-standard-images
Listed 0 items.
这也不是：
$ gcloud container images list
Listed 0 items.
Only listing images in gcr.io/GOOGLE_CLOUD_PROJECT_ID. Use --repository to list images in other repositories.
手动删除其中的许多内容会有些痛苦，因为https://console.cloud.google.com/gcr/images/GOOGLE_CLOUD_PROJECT_ID/US/appengine下的每个图像都位于一个单独的目录中，我必须首先单击该图像以选择该图像，然后单击“删除”按钮，然后返回到appengine目录，然后针对其他图像再次开始该过程。
答案 0 :(得分：2)
您提供的开发者控制台链接指向Container Registry，其中存储了容器映像，包括在App Engine Flexible部署期间创建的容器映像。
您可以使用以下gcloud命令按位置列出这些图像：
gcloud container images list --repository=[HOSTNAME]/[PROJECT-ID]
其中[HOSTNAME]是以下四个选项之一：gcr.io，us.gcr.io，eu.gcr.io或asia.gcr.io。
然后您可以使用以下命令删除图像：
gcloud container images delete [HOSTNAME]/[PROJECT-ID]/[IMAGE]@[IMAGE_DIGEST]
您可以在在线documentation中找到有关此信息的详细信息。
答案 1 :(得分：2)
由于LundinCast的回答，我使用us.gcr.io作为主机名，并且能够做到这一点：
$ gcloud container images list --repository=us.gcr.io/GCP_PROJECT_ID
NAME
us.gcr.io/GCP_PROJECT_ID/appengine
显然AppEngine使用嵌套的存储库：
$ gcloud container images list --repository=us.gcr.io/GCP_PROJECT_ID/appengine
NAME
us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t125425
us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t154726
us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t162317
us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181113t132223
us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181113t150454
us.gcr.io/GCP_PROJECT_ID/appengine/default.20181108t184629
us.gcr.io/GCP_PROJECT_ID/appengine/default.20181108t205831
us.gcr.io/GCP_PROJECT_ID/appengine/DEF.20181113t163644
尽管如此，但它没有达到我的预期：
$ gcloud container images list --repository=us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t125425
Listed 0 items.
相反，我必须这样做：
$ gcloud container images list-tags us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t125425
DIGEST TAGS TIMESTAMP
c8e3797d36b2 latest 2018-11-10T12:57:58
根据documentation for deleting images，可以删除...
当我尝试删除单个版本/标签时，提示我：
$ gcloud container images delete us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t125425
WARNING: Implicit ":latest" tag specified: us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t125425
Digests:
- us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t125425@sha256:c8e3797d36b27599c91e231afd5521e6a1283319fce5a0fd978b7cdcdb1d4181
Associated tags:
- latest
Tags:
- us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t125425:latest
This operation will delete the tags and images identified by the
digests above.
Do you want to continue (Y/n)? n
ERROR: (gcloud.container.images.delete) Aborted by user.
这对于编写可以自动删除旧图像的脚本或程序有一点问题（尽管我可以将yes命令传送到gcloud container images delete IMAGE命令中）；幸运的是，可以使用一个--quiet参数：
$ gcloud container images delete us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t125425 --quiet
WARNING: Implicit ":latest" tag specified: us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t125425
Digests:
- us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t125425@sha256:c8e3797d36b27599c91e231afd5521e6a1283319fce5a0fd978b7cdcdb1d4181
Associated tags:
- latest
Tags:
- us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t125425:latest
Deleted [us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t125425:latest].
Deleted [us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t125425@sha256:c8e3797d36b27599c91e231afd5521e6a1283319fce5a0fd978b7cdcdb1d4181].
所以，那行得通。
使用删除图像的摘要方法再次尝试另一幅图像：
$ gcloud container images list-tags us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t154726
DIGEST TAGS TIMESTAMP
4d860e73f85f latest 2018-11-10T15:50:55
惊奇！您不能只使用列出的摘要：
$ gcloud container images delete us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t154726@4d860e73f85f
ERROR: (gcloud.container.images.delete) [us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t154726@4d860e73f85f] digest must be of the form "sha256:<digest>".
这有点奇怪（只有一个标签“最新”，甚至没有显示在错误中）：
$ gcloud container images delete us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t154726@sha256:4d860e73f85f
ERROR: Tags:
ERROR: (gcloud.container.images.delete) This operation will implicitly delete the tags listed above. Please manually remove with the `untag` command or re-run with --force-delete-tags to confirm.
好的，让我们使用--force-delete-tags：
$ gcloud container images delete us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t154726@sha256:4d860e73f85f --force-delete-tags
Digests:
- us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t154726@sha256:4d860e73f85fdddb485e85dc867653e3e6095a5225f4f670200c98ede10fb542
Associated tags:
- latest
This operation will delete the tags and images identified by the digests above.
Do you want to continue (Y/n)? n
ERROR: (gcloud.container.images.delete) Aborted by user.
像以前一样，让我们使用--quiet来防止显示提示：
$ gcloud container images delete us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t154726@sha256:4d860e73f85f --force-delete-tags --quiet
Digests:
- us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t154726@sha256:4d860e73f85fdddb485e85dc867653e3e6095a5225f4f670200c98ede10fb542
Associated tags:
- latest
Deleted [us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t154726:latest].
Deleted [us.gcr.io/GCP_PROJECT_ID/appengine/ABC.20181110t154726@sha256:4d860e73f85fdddb485e85dc867653e3e6095a5225f4f670200c98ede10fb542].
因此，通过摘要删除需要更详细的命令行。