Test setutp
# Dockerfile
FROM mcr.microsoft.com/windows/nanoserver:ltsc2022
Testing this using docker buildx build --output=type=docker,dest=/path/to/export.tar -< Dockerfile
Issues
- struct fields are being reordered
os.version field is being stripped from manifest list entries as well as from the image configurls field is missing- Foreign layers are being marked as normal layers
Real data from mcr registry
index
Details
{
"schemaVersion": 2,
"mediaType": "application/vnd.docker.distribution.manifest.list.v2+json",
"manifests": [
{
"mediaType": "application/vnd.docker.distribution.manifest.v2+json",
"size": 574,
"digest": "sha256:718e295fd449212ffd928189ee1e3c62893faf1cd1a2b0b345394ec234362f65",
"platform": {
"architecture": "amd64",
"os": "windows",
"os.version": "10.0.20348.469"
}
}
]
}manifest
Details
{
"schemaVersion": 2,
"mediaType": "application/vnd.docker.distribution.manifest.v2+json",
"config": {
"mediaType": "application/vnd.docker.container.image.v1+json",
"size": 406,
"digest": "sha256:f2b4df67e05043a8a88e30cc31a0006a3aedcd76a4ea031ac29baf67d37a6346"
},
"layers": [
{
"mediaType": "application/vnd.docker.image.rootfs.foreign.diff.tar.gzip",
"size": 117334348,
"digest": "sha256:b2bb136f79c12b0a42720d7bb83469bce3f7bf2ca5c8bc68a36228796311fc6b",
"urls": [
"https://mcr.microsoft.com/v2/windows/nanoserver/blobs/sha256:b2bb136f79c12b0a42720d7bb83469bce3f7bf2ca5c8bc68a36228796311fc6b"
]
}
]
}config
Details
{
"architecture": "amd64",
"os": "windows",
"os.version": "10.0.20348.469",
"created": "2022-01-06T03:34:42.4676822+00:00",
"history": [
{
"created": "2022-01-06T03:34:42.4676822+00:00",
"created_by": "Apply image ltsc2022-amd64"
}
],
"rootfs": {
"type": "layers",
"diff_ids": [
"sha256:22fd5883bda971d71824447522829114747c1a2b9f446648a3d8e6f291aadbe0"
]
},
"config": {
"user": "ContainerUser",
"cmd": [
"c:\\windows\\system32\\cmd.exe"
]
}
}data output by buildkit
index
Details
{
"schemaVersion": 2,
"manifests": [
{
"mediaType": "application/vnd.docker.distribution.manifest.v2+json",
"digest": "sha256:7e00800a3a0301a0a091dde2c9b3090119d48804d6ea9cecf1d2a5f27c498055",
"size": 529,
"annotations": {
"org.opencontainers.image.created": "2022-01-11T18:37:00Z"
}
}
]
}manifest
Details
{
"mediaType": "application/vnd.docker.distribution.manifest.v2+json",
"schemaVersion": 2,
"config": {
"mediaType": "application/vnd.docker.container.image.v1+json",
"digest": "sha256:150a59cf86898055400a9e430a0b1b316cc9776e2063498dc030bdb77fde21cc",
"size": 430
},
"layers": [
{
"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
"digest": "sha256:b2bb136f79c12b0a42720d7bb83469bce3f7bf2ca5c8bc68a36228796311fc6b",
"size": 117334348
}
]
}config
Details
{
"architecture": "amd64",
"config": {
"User": "ContainerUser",
"Env": [
"PATH=c:\\Windows\\System32;c:\\Windows"
],
"Cmd": [
"c:\\windows\\system32\\cmd.exe"
],
"OnBuild": null
},
"created": "2022-01-06T03:34:42.4676822Z",
"history": [
{
"created": "2022-01-06T03:34:42.4676822Z",
"created_by": "Apply image ltsc2022-amd64"
}
],
"os": "windows",
"rootfs": {
"type": "layers",
"diff_ids": [
"sha256:22fd5883bda971d71824447522829114747c1a2b9f446648a3d8e6f291aadbe0"
]
}
}Note: I piped all data through jq for easier reading
Test setutp
Testing this using
docker buildx build --output=type=docker,dest=/path/to/export.tar -< DockerfileIssues
os.versionfield is being stripped from manifest list entries as well as from the image configurlsfield is missingReal data from mcr registry
index
Details
{ "schemaVersion": 2, "mediaType": "application/vnd.docker.distribution.manifest.list.v2+json", "manifests": [ { "mediaType": "application/vnd.docker.distribution.manifest.v2+json", "size": 574, "digest": "sha256:718e295fd449212ffd928189ee1e3c62893faf1cd1a2b0b345394ec234362f65", "platform": { "architecture": "amd64", "os": "windows", "os.version": "10.0.20348.469" } } ] }manifest
Details
{ "schemaVersion": 2, "mediaType": "application/vnd.docker.distribution.manifest.v2+json", "config": { "mediaType": "application/vnd.docker.container.image.v1+json", "size": 406, "digest": "sha256:f2b4df67e05043a8a88e30cc31a0006a3aedcd76a4ea031ac29baf67d37a6346" }, "layers": [ { "mediaType": "application/vnd.docker.image.rootfs.foreign.diff.tar.gzip", "size": 117334348, "digest": "sha256:b2bb136f79c12b0a42720d7bb83469bce3f7bf2ca5c8bc68a36228796311fc6b", "urls": [ "https://mcr.microsoft.com/v2/windows/nanoserver/blobs/sha256:b2bb136f79c12b0a42720d7bb83469bce3f7bf2ca5c8bc68a36228796311fc6b" ] } ] }config
Details
{ "architecture": "amd64", "os": "windows", "os.version": "10.0.20348.469", "created": "2022-01-06T03:34:42.4676822+00:00", "history": [ { "created": "2022-01-06T03:34:42.4676822+00:00", "created_by": "Apply image ltsc2022-amd64" } ], "rootfs": { "type": "layers", "diff_ids": [ "sha256:22fd5883bda971d71824447522829114747c1a2b9f446648a3d8e6f291aadbe0" ] }, "config": { "user": "ContainerUser", "cmd": [ "c:\\windows\\system32\\cmd.exe" ] } }data output by buildkit
index
Details
{ "schemaVersion": 2, "manifests": [ { "mediaType": "application/vnd.docker.distribution.manifest.v2+json", "digest": "sha256:7e00800a3a0301a0a091dde2c9b3090119d48804d6ea9cecf1d2a5f27c498055", "size": 529, "annotations": { "org.opencontainers.image.created": "2022-01-11T18:37:00Z" } } ] }manifest
Details
{ "mediaType": "application/vnd.docker.distribution.manifest.v2+json", "schemaVersion": 2, "config": { "mediaType": "application/vnd.docker.container.image.v1+json", "digest": "sha256:150a59cf86898055400a9e430a0b1b316cc9776e2063498dc030bdb77fde21cc", "size": 430 }, "layers": [ { "mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip", "digest": "sha256:b2bb136f79c12b0a42720d7bb83469bce3f7bf2ca5c8bc68a36228796311fc6b", "size": 117334348 } ] }config
Details
{ "architecture": "amd64", "config": { "User": "ContainerUser", "Env": [ "PATH=c:\\Windows\\System32;c:\\Windows" ], "Cmd": [ "c:\\windows\\system32\\cmd.exe" ], "OnBuild": null }, "created": "2022-01-06T03:34:42.4676822Z", "history": [ { "created": "2022-01-06T03:34:42.4676822Z", "created_by": "Apply image ltsc2022-amd64" } ], "os": "windows", "rootfs": { "type": "layers", "diff_ids": [ "sha256:22fd5883bda971d71824447522829114747c1a2b9f446648a3d8e6f291aadbe0" ] } }Note: I piped all data through jq for easier reading