Try building multi-arch image

[Arkaniad]

If we're scheduling pods on arm64 which is now a possibility we'll get issues if this image is used as a sidecar and doesn't support arm64 if the pod it's scheduled for does. Use buildx to build both images.

Reference: https://blog.thesparktree.com/docker-multi-arch-github-actions

[benbz]

LGTM, let's give it a go

[benbz]

From https://github.com/element-hq/tailscale-k8s/actions/runs/10610614002/job/29408425087

crane manifest ghcr.io/element-hq/tailscale-k8s:main 
{
  "schemaVersion": 2,
  "mediaType": "application/vnd.oci.image.index.v1+json",
  "manifests": [
    {
      "mediaType": "application/vnd.oci.image.manifest.v1+json",
      "digest": "sha256:ed24f59f576e21d77222ee2d893bdd75287f1b8a4b07d1c5e7f05829b04d6fff",
      "size": 1054,
      "platform": {
        "architecture": "amd64",
        "os": "linux"
      }
    },
    {
      "mediaType": "application/vnd.oci.image.manifest.v1+json",
      "digest": "sha256:b1db3c0988cbd2bed574111c50f96e74c91503ddea00689ad8074e66c38f4d5b",
      "size": 566,
      "annotations": {
        "vnd.docker.reference.digest": "sha256:ed24f59f576e21d77222ee2d893bdd75287f1b8a4b07d1c5e7f05829b04d6fff",
        "vnd.docker.reference.type": "attestation-manifest"
      },
      "platform": {
        "architecture": "unknown",
        "os": "unknown"
      }
    }
  ]
}

So something is missing

[benbz]

#36 has indeed fixed it. https://github.com/element-hq/tailscale-k8s/actions/runs/10610909314/job/29409303252 gives

crane manifest ghcr.io/element-hq/tailscale-k8s:main                       
{
  "schemaVersion": 2,
  "mediaType": "application/vnd.oci.image.index.v1+json",
  "manifests": [
    {
      "mediaType": "application/vnd.oci.image.manifest.v1+json",
      "digest": "sha256:3f629c5e07d694a10aab3152edc4dd8f3cc45902a4c50d03539a3e49c812b791",
      "size": 1054,
      "platform": {
        "architecture": "amd64",
        "os": "linux"
      }
    },
    {
      "mediaType": "application/vnd.oci.image.manifest.v1+json",
      "digest": "sha256:6b03354a95696ef39f6306c1811b04b3969e14a8bab7afece4b58f18136dcf0e",
      "size": 1054,
      "platform": {
        "architecture": "arm64",
        "os": "linux"
      }
    },
    {
      "mediaType": "application/vnd.oci.image.manifest.v1+json",
      "digest": "sha256:23269fdbe9afedbda9a1b327b5e9dc10cd7a78fb526e398e078c1d08c5fe7e8c",
      "size": 566,
      "annotations": {
        "vnd.docker.reference.digest": "sha256:3f629c5e07d694a10aab3152edc4dd8f3cc45902a4c50d03539a3e49c812b791",
        "vnd.docker.reference.type": "attestation-manifest"
      },
      "platform": {
        "architecture": "unknown",
        "os": "unknown"
      }
    },
    {
      "mediaType": "application/vnd.oci.image.manifest.v1+json",
      "digest": "sha256:ea8b959e67f00b024009b8be6b2e238903258899cbf7cc457e92dc7a14f92d41",
      "size": 566,
      "annotations": {
        "vnd.docker.reference.digest": "sha256:6b03354a95696ef39f6306c1811b04b3969e14a8bab7afece4b58f18136dcf0e",
        "vnd.docker.reference.type": "attestation-manifest"
      },
      "platform": {
        "architecture": "unknown",
        "os": "unknown"
      }
    }
  ]
}