docker image import does not seem to respect --platform #6361
Closed
Description
- I have tried with the latest version of Docker Desktop
- I have tried disabling enabled experimental features
- I have uploaded Diagnostics
- Diagnostics ID:
Expected behavior
When using docker image import --platform, I expect the resulting image to be of the specified platform.
Actual behavior
docker image import seems to always produce an image with the architecture of the platform. On an Intel MacBook, I get Architecture: amd64; on an Apple Silicon MacBook, I get Architecture: arm64.
Information / Steps to reproduce the behavior
Here's a simple test script to reproduce the issue:
#!/bin/sh
set -eux
docker version
echo hello > hello
tar -cf filesystem.tar hello
for arch in arm64 amd64 ; do
docker image import --platform linux/$arch filesystem.tar import_test:$arch
docker image inspect --format '{{.Architecture}}' import_test:$arch
doneResulting output on my primary machine:
$ ls
TEST*
$ ./TEST
+ docker version
Client:
Cloud integration: v1.0.25
Version: 20.10.16
API version: 1.41
Go version: go1.17.10
Git commit: aa7e414
Built: Thu May 12 09:20:34 2022
OS/Arch: darwin/arm64
Context: default
Experimental: true
Server: Docker Desktop 4.9.0 (80466)
Engine:
Version: 20.10.16
API version: 1.41 (minimum version 1.12)
Go version: go1.17.10
Git commit: f756502
Built: Thu May 12 09:14:19 2022
OS/Arch: linux/arm64
Experimental: false
containerd:
Version: 1.6.4
GitCommit: 212e8b6fa2f44b9c21b2798135fc6fb7c53efc16
runc:
Version: 1.1.1
GitCommit: v1.1.1-0-g52de29d
docker-init:
Version: 0.19.0
GitCommit: de40ad0
+ echo hello
+ tar -cf filesystem.tar hello
+ for arch in arm64 amd64
+ docker image import --platform linux/arm64 filesystem.tar import_test:arm64
sha256:34ac07c56e0cc823a2879f046bdbae96ea53c5ec24e9587c49b22754ff3c9de5
+ docker image inspect --format '{{.Architecture}}' import_test:arm64
arm64
+ for arch in arm64 amd64
+ docker image import --platform linux/amd64 filesystem.tar import_test:amd64
sha256:7fc985350d8e38a7a8834ec212aae1eb993bfcce9f66bca414c457212cdc4241
+ docker image inspect --format '{{.Architecture}}' import_test:amd64
arm64Using Docker Desktop 4.9.0 (80466) or Docker Desktop 4.8.2 (79419) on an Apple Silicon system (OS/Arch: linux/arm64) gives me two arm64 images. Using Docker Desktop 4.6.1 (76265) on a Intel system (OS/Arch: linux/amd64) gives me two amd64 images. (I haven't tried newer Docker Desktop versions on Intel, but I can if needed).
Output of /Applications/Docker.app/Contents/MacOS/com.docker.diagnose check
$ /Applications/Docker.app/Contents/MacOS/com.docker.diagnose check
Starting diagnostics
[PASS] DD0027: is there available disk space on the host?
[PASS] DD0028: is there available VM disk space?
[PASS] DD0031: does the Docker API work?
[PASS] DD0004: is the Docker engine running?
[PASS] DD0011: are the LinuxKit services running?
[PASS] DD0016: is the LinuxKit VM running?
[PASS] DD0001: is the application running?
[PASS] DD0018: does the host support virtualization?
[PASS] DD0017: can a VM be started?
[PASS] DD0015: are the binary symlinks installed?
[PASS] DD0003: is the Docker CLI working?
[PASS] DD0013: is the $PATH ok?
[PASS] DD0007: is the backend responding?
[PASS] DD0014: are the backend processes running?
[PASS] DD0008: is the native API responding?
[PASS] DD0009: is the vpnkit API responding?
[PASS] DD0010: is the Docker API proxy responding?
[PASS] DD0012: is the VM networking working?
[PASS] DD0032: do Docker networks overlap with host IPs?
[SKIP] DD0030: is the image access management authorized?
[PASS] DD0019: is the com.docker.vmnetd process responding?
[PASS] DD0033: does the host have Internet access?
No fatal errors detected.
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