specifying --platform in .devcontainer.json

[AbdulAbCellera]

This is more of a question than an issue:

Host: macOS arm64
Image: mcr.microsoft.com/devcontainers/base:jammy

>> docker manifest inspect mcr.microsoft.com/devcontainers/base:jammy
{
   "schemaVersion": 2,
   "mediaType": "application/vnd.docker.distribution.manifest.list.v2+json",
   "manifests": [
      {
         "mediaType": "application/vnd.docker.distribution.manifest.v2+json",
         "size": 1786,
         "digest": "sha256:54d1fd0219908ba82b67230aabf350cf72dcab012d48111dccaf18209a56d1e4",
         "platform": {
            "architecture": "amd64",
            "os": "linux"
         }
      },
      {
         "mediaType": "application/vnd.docker.distribution.manifest.v2+json",
         "size": 1786,
         "digest": "sha256:aec79b5e88157fa7e4b3ec9af83a48bce0f1435ee982ecd65680c27a3ab877af",
         "platform": {
            "architecture": "arm64",
            "os": "linux"
         }
      }
   ]
}

when I choose the vscode command Rebuild and Reopen in Container, I get a container with an arm64 arch (matching host). Setting export DOCKER_DEFAULT_PLATFORM=linux/amd64 in ~/.zshrc did not help.

The Question:

• how to specify --platfrom=linux/amd64 in .devcontainer.json

[AbdulAbCellera]

This worked for me
"image": "mcr.microsoft.com/devcontainers/base:jammy@sha256:54d1fd0219908ba82b67230aabf350cf72dcab012d48111dccaf18209a56d1e4",

However, if I want the latest image this would not do it.

[chrmarti]

You could use a Dockerfile with --platform in FROM: https://docs.docker.com/engine/reference/builder/#from

[github-actions]

This issue has been closed automatically because it needs more information and has not had recent activity. See also our issue reporting guidelines.

Happy Coding!