构建镜像

首先在 amd64 机器构建 lovelonger**/**perf-test:amd 镜像，然后在 arm64 机器构建 lovelonger/perf-test:arm 镜像，构建完成 push 到 dockerhub。

需要注意的是，manifest文件仅仅是针对于已经在仓库中的镜像！！！换句话说，就是这个镜像是刚从仓库中pull下来的！如果这个镜像是自己build的，需要先push到仓库中，否则，这个镜像是没有manifest文件的！！同样的，如果你pull了一个镜像，tag了一下，再去看这个manifest文件，也是没有的，因为tag后的镜像不在镜像仓库中。

创建 manifest 列表

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# docker manifest create MANIFEST_LIST MANIFEST [MANIFEST...]
# docker manifest create lovelonger/perf-test \
      lovelonger/perf-test:amd \
      lovelonger/perf-test:arm

当要修改一个 manifest列表时，可以加入 -a或 --amend参数。

设置 manifest 列表

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# docker manifest annotate [OPTIONS] MANIFEST_LIST MANIFEST
# docker manifest annotate lovelonger/perf-test \
      lovelonger/perf-test:amd \
      --os linux --arch amd64

# docker manifest annotate lovelonger/perf-test \
      lovelonger/perf-test:arm \
      --os linux --arch arm64 --variant v8

查看 manifest 列表

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# docker manifest inspect lovelonger/perf-test
#  docker manifest inspect lovelonger/perf-test
{
   "schemaVersion": 2,
   "mediaType": "application/vnd.docker.distribution.manifest.list.v2+json",
   "manifests": [
      {
         "mediaType": "application/vnd.docker.distribution.manifest.v2+json",
         "size": 947,
         "digest": "sha256:975589cae8ea492aac12a29d11cf31578a45ca92c32b599ac1030890d9f1e66a",
         "platform": {
            "architecture": "amd64",
            "os": "linux"
         }
      },
      {
         "mediaType": "application/vnd.docker.distribution.manifest.v2+json",
         "size": 947,
         "digest": "sha256:d6bc0f26dc4d8746e7b60df59269c66840e4681f8af613d1da9b16884e402133",
         "platform": {
            "architecture": "arm64",
            "os": "linux",
            "variant": "v8"
         }
      }
   ]
}

推送 manifest 列表

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# docker manifest push lovelonger/perf-test

推送后可以在 dockerhub 看到详情

测试

x84_64 机器上面测试

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# docker run -ti --rm lovelonger/perf-test:latest echo ;uname -a
Unable to find image 'lovelonger/perf-test:latest' locally
latest: Pulling from lovelonger/perf-test
2408cc74d12b: Pull complete
9d980ba59630: Pull complete
a036d2a6b4b7: Pull complete
Digest: sha256:df7c8738c9d7e3ce5058c90dd7b68dce874e4f454ee09bc28edc2727902c6ba5
Status: Downloaded newer image for lovelonger/perf-test:latest

Linux crawler-sel 5.13.0-1027-oracle #32~20.04.1-Ubuntu SMP Fri Apr 15 05:59:34 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

arm64 机器上面测试

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# docker run -ti --rm lovelonger/perf-test:latest echo ;uname -a
Unable to find image 'lovelonger/perf-test:latest' locally
latest: Pulling from lovelonger/perf-test
b3c136eddcbf: Already exists
abd313fa511b: Pull complete
a036d2a6b4b7: Pull complete
Digest: sha256:df7c8738c9d7e3ce5058c90dd7b68dce874e4f454ee09bc28edc2727902c6ba5
Status: Downloaded newer image for lovelonger/perf-test:latest

Linux fc17e6a10e93 5.13.0-1021-oracle #26~20.04.1-Ubuntu SMP Mon Mar 7 14:30:17 UTC 2022 aarch64 Linux

Docker创建manifest镜像