Buildpacks produces linux/amd64 images on linux/arm64/v8 (M1 Mac) machines.

[j-windsor]

Repro steps:

1. use cloud code go hello world sample.
2. run pack build hello-world-go --builder gcr.io/buildpacks/builder:v1 --path ./. It will build successfully.
3. run this (below). Note that the image runs successfully on an M1 Mac even though the platform is very different.

➜  go-hello-world git:(master) ✗ docker run hello-world-go
WARNING: The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested
2021/03/04 21:34:30 Server listening on port :8080

4. run docker image inspect hello-world-go to verify. Output:

[
    {
        "Id": "sha256:63851e5c479a2e8bc605d882d749c3c9c5f3e79bf895763f06b552ce8abea0f2",
        "RepoTags": [
            "hello-world-go:latest"
        ],
        "RepoDigests": [],
        "Parent": "",
        "Comment": "",
        "Created": "1980-01-01T00:00:01Z",
        "Container": "",
        "ContainerConfig": {
            "Hostname": "",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "Tty": false,
            "OpenStdin": false,
            "StdinOnce": false,
            "Env": null,
            "Cmd": null,
            "Image": "",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": null,
            "OnBuild": null,
            "Labels": null
        },
        "DockerVersion": "",
        "Author": "",
        "Config": {
            "Hostname": "",
            "Domainname": "",
            "User": "cnb",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "Tty": false,
            "OpenStdin": false,
            "StdinOnce": false,
            "Env": [
                "DEBIAN_FRONTEND=noninteractive",
                "PATH=/cnb/process:/cnb/lifecycle:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                "CNB_USER_ID=1000",
                "CNB_GROUP_ID=1000",
                "CNB_STACK_ID=google",
                "PORT=8080",
                "CNB_LAYERS_DIR=/layers",
                "CNB_APP_DIR=/workspace",
                "CNB_PLATFORM_API=0.4",
                "CNB_DEPRECATION_MODE=quiet"
            ],
            "Cmd": null,
            "Image": "sha256:aa08b59bfecec305f0357ef091b6c2af52553e3dc9f82076000ea9607339ac46",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": [
                "/cnb/process/web"
            ],
            "OnBuild": null,
            "Labels": {
                "io.buildpacks.build.metadata": "{\"bom\":null,\"buildpacks\":[{\"id\":\"google.go.runtime\",\"version\":\"0.9.1\"},{\"id\":\"google.go.build\",\"version\":\"0.9.0\"},{\"id\":\"google.utils.label\",\"version\":\"0.0.1\"}],\"launcher\":{\"version\":\"0.10.2\",\"source\":{\"git\":{\"repository\":\"github.com/buildpacks/lifecycle\",\"commit\":\"960cf58\"}}},\"processes\":[{\"type\":\"web\",\"command\":\"/layers/google.go.build/bin/main\",\"args\":null,\"direct\":true,\"buildpackID\":\"google.go.build\"}]}",
                "io.buildpacks.lifecycle.metadata": "{\"app\":[{\"sha\":\"sha256:70c27410a4a815e7e086e4a5e4f42f8a75340e7476c42b846f6bdeab6f7447b6\"}],\"buildpacks\":[{\"key\":\"google.go.runtime\",\"version\":\"0.9.1\",\"layers\":{}},{\"key\":\"google.go.build\",\"version\":\"0.9.0\",\"layers\":{\"bin\":{\"sha\":\"sha256:55c826a737e6bd4d430a16d0b844b70f59becc5768b4347528cf9d03c82ff3a3\",\"data\":{},\"build\":false,\"launch\":true,\"cache\":false}}},{\"key\":\"google.utils.label\",\"version\":\"0.0.1\",\"layers\":{}}],\"config\":{\"sha\":\"sha256:3990daccb002152264b5352a49eba085b8027474dd1667aeebc8d50623c23959\"},\"launcher\":{\"sha\":\"sha256:576e5f5696c6fcae9b679dca450d7ab127176f5c529bc9790b42abb9e3658cfa\"},\"process-types\":{\"sha\":\"sha256:83d85471d9f8a3834b4e27cf701e3f0aef220cc816d9c173c7d32cd73909a590\"},\"runImage\":{\"topLayer\":\"sha256:3fd970aa9e35cc28e3b04656cfd43247aaf5b4803a833b0aca206fd38386ea21\",\"reference\":\"675c3ee754ac793e91fc28adfd00a161b2c5e17d2952f6352b315c6caf537b64\"},\"stack\":{\"runImage\":{\"image\":\"gcr.io/buildpacks/gcp/run:v1\"}}}",
                "io.buildpacks.project.metadata": "{}",
                "io.buildpacks.stack.id": "google"
            }
        },
        "Architecture": "amd64",
        "Os": "linux",
        "Size": 129830232,
        "VirtualSize": 129830232,
        "GraphDriver": {
            "Data": {
                "LowerDir": "/var/lib/docker/overlay2/1347a433b4eebf9f094dc5ed481e7d2413b1eaa11ef4bf83b1fa0fb28ce444df/diff:/var/lib/docker/overlay2/ac081f81942c33ccfaa5bafec7b392ee6c7d37768cc3a7c8cc9371adf0fcb948/diff:/var/lib/docker/overlay2/f471c57d46ec09bfd333e50f866cfab852f88894ecbda619ae7bb44fa9df40c3/diff:/var/lib/docker/overlay2/52b37ddce44569e9e54eedddf762342d47a86b7bd974c45128592ee235b2bb33/diff:/var/lib/docker/overlay2/834b761625190a72efaf73322a004e74ec28b0a9b0a91bd0e9e36ea41140b98d/diff:/var/lib/docker/overlay2/9583eccac1742c436427abddf3b311687676462334bcfa7a453f75a42bf7ff5c/diff:/var/lib/docker/overlay2/dfd1aebcea5d055552728a25f5ed5710fa6084843e4f697fe0ef23110d836077/diff:/var/lib/docker/overlay2/a486489579b89d3b10fe99b8169a442540c201364574ed0a1403a387a3b297b0/diff:/var/lib/docker/overlay2/00953b7369c89711f20114c718cb43be8cb0e2dcf30dab96c008bbb9c39debee/diff",
                "MergedDir": "/var/lib/docker/overlay2/88e077cb595532e5516035bfa590d22dfb31a2954591036acec0d2c4aa06bcf3/merged",
                "UpperDir": "/var/lib/docker/overlay2/88e077cb595532e5516035bfa590d22dfb31a2954591036acec0d2c4aa06bcf3/diff",
                "WorkDir": "/var/lib/docker/overlay2/88e077cb595532e5516035bfa590d22dfb31a2954591036acec0d2c4aa06bcf3/work"
            },
            "Name": "overlay2"
        },
        "RootFS": {
            "Type": "layers",
            "Layers": [
                "sha256:15c45f7e4eae2c5acf2eaaf68b297df185bb7e090d92dd9618d85b95a148f9d6",
                "sha256:2b77f0d5aff80e22e2573f2dbc29895899b4bc2f7448d44997b70f4a7501ebf2",
                "sha256:84ff92691f909a05b224e1c56abb4864f01b4f8e3c854e4bb4c7baf1d3f6d652",
                "sha256:0839753e8256123d351820644c6dd093be6d673a517bf8be524df7ae02327168",
                "sha256:3fd970aa9e35cc28e3b04656cfd43247aaf5b4803a833b0aca206fd38386ea21",
                "sha256:55c826a737e6bd4d430a16d0b844b70f59becc5768b4347528cf9d03c82ff3a3",
                "sha256:70c27410a4a815e7e086e4a5e4f42f8a75340e7476c42b846f6bdeab6f7447b6",
                "sha256:576e5f5696c6fcae9b679dca450d7ab127176f5c529bc9790b42abb9e3658cfa",
                "sha256:3990daccb002152264b5352a49eba085b8027474dd1667aeebc8d50623c23959",
                "sha256:83d85471d9f8a3834b4e27cf701e3f0aef220cc816d9c173c7d32cd73909a590"
            ]
        },
        "Metadata": {
            "LastTagTime": "2021-03-04T21:33:36.407190967Z"
        }
    }
]

[briandealwis]

Buildpacks does not yet support building for linux/arm64 yet.

buildpacks/lifecycle#435

[peterfortuin]

I have tried this as well, but got a different result. For me it does tries to run/build a x86 image, but it's really slow. So I never got an image that I can run.