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Last active January 25, 2021 19:08
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pack using samples on Apple Silicon M1
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README.md

Pre-requisites

  • Docker Desktop preview
  • Golang, coreutils (from homebrew)
  • Git, make (from Command Line Tools (CLT) for Xcode: xcode-select --install)

Steps

  1. Clone pack, build arm binary, put on PATH

    git clone https://github.com/buildpacks/pack
pushd pack

git checkout v0.16.0

make build

export PATH=$PATH:$PWD/out

popd

file $(which pack)   # Mach-O 64-bit executable arm64 
pack version   # 0.0.0+git-e0f6c50

  2. Clone lifecycle, build arm binary, create a lifecycle package tgz

    git clone https://github.com/buildpacks/lifecycle
pushd lifecycle

git checkout v0.10.1

# Override amd64 default GOARCH
GOARCH=arm64 make build-linux

make package-linux

# Fix inaccurate package name
mv out/lifecycle-v0.0.0+linux.{x86-64,arm64}.tgz

# Confirm correct binary
tar xOf out/lifecycle-v0.0.0+linux.arm64.tgz lifecycle | file -   # ... ELF 64-bit LSB executable, ARM aarch64 ...

popd

  3. Clone samples, patch sample builder with lifecycle package tgz

    git clone https://github.com/buildpacks/samples
pushd samples

git checkout bd35978

# Patch builder with local lifecycle package
cat >> builders/alpine/builder.toml <<EOF
[lifecycle]
uri = "../../../lifecycle/out/lifecycle-v0.0.0+linux.arm64.tgz"
EOF

# Build stacks and builder (which will all be arm64 images)
make build-stack-alpine build-builder-alpine

docker inspect cnbs/sample-builder:alpine

# confirm all images are "arm64"
docker inspect \
   cnbs/sample-builder:alpine \
   cnbs/sample-stack-run:alpine \
   cnbs/sample-stack-build:alpine \
     -f '{{.Architecture}}'

popd

  4. Test the sample builder

    pack build hello-arm --builder cnbs/sample-builder:alpine --pull-policy=never --trust-builder --verbose --path /var/empty

    Output

    Builder cnbs/sample-builder:alpine is trusted
Selected run image cnbs/sample-stack-run:alpine
Creating builder with the following buildpacks:
-> samples/java-maven@0.0.1
-> samples/kotlin-gradle@0.0.1
-> samples/hello-universe@0.0.1
-> samples/hello-moon@0.0.1
-> samples/hello-world@0.0.1
Using build cache volume pack-cache-d13341c5fe82.build
===> DETECTING
[detector] ======== Results ========
[detector] fail: samples/java-maven@0.0.1
[detector] ======== Results ========
[detector] fail: samples/kotlin-gradle@0.0.1
[detector] ======== Results ========
[detector] pass: samples/hello-world@0.0.1
[detector] pass: samples/hello-moon@0.0.1
[detector] Resolving plan... (try #1)
[detector] samples/hello-world 0.0.1
[detector] samples/hello-moon  0.0.1
===> ANALYZING
[analyzer] Analyzing image "1f27b4e881679a5a6f7de03bd6c1923473663834a7fbd3a9185ee132c35e465c"
===> RESTORING
===> BUILDING
[builder] ---> Hello World buildpack
[builder]      platform_dir files:
[builder]        /platform:
[builder]        total 12
[builder]        drwxr-xr-x    1 root     root          4096 Jan  1  1980 .
[builder]        drwxr-xr-x    1 root     root          4096 Jan 23 23:45 ..
[builder]        drwxr-xr-x    1 root     root          4096 Jan  1  1980 env
[builder]
[builder]        /platform/env:
[builder]        total 8
[builder]        drwxr-xr-x    1 root     root          4096 Jan  1  1980 .
[builder]        drwxr-xr-x    1 root     root          4096 Jan  1  1980 ..
[builder]      env_dir: /platform/env
[builder]      env vars:
[builder]        declare -x CNB_BUILDPACK_DIR="/cnb/buildpacks/samples_hello-world/0.0.1"
[builder]        declare -x CNB_STACK_ID="io.buildpacks.samples.stacks.alpine"
[builder]        declare -x HOME="/home/cnb"
[builder]        declare -x HOSTNAME="d1a8948737a0"
[builder]        declare -x OLDPWD
[builder]        declare -x PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
[builder]        declare -x PWD="/workspace"
[builder]        declare -x SHLVL="1"
[builder]      layers_dir: /layers/samples_hello-world
[builder]      plan_path: /tmp/samples_hello-world-708964433/samples_hello-world/plan.toml
[builder]      plan contents:
[builder]        [[entries]]
[builder]          name = "some-world"
[builder]
[builder]        [[entries]]
[builder]          name = "some-world"
[builder]          version = "0.1"
[builder]          [entries.metadata]
[builder]            version = "0.1"
[builder]            world = "Earth-616"
[builder]
[builder] ---> Done
[builder] ---> Hello Moon buildpack
[builder]      env_dir: /platform/env
[builder]      env vars:
[builder]        declare -x CNB_BUILDPACK_DIR="/cnb/buildpacks/samples_hello-moon/0.0.1"
[builder]        declare -x CNB_STACK_ID="io.buildpacks.samples.stacks.alpine"
[builder]        declare -x HOME="/home/cnb"
[builder]        declare -x HOSTNAME="d1a8948737a0"
[builder]        declare -x OLDPWD
[builder]        declare -x PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
[builder]        declare -x PWD="/workspace"
[builder]        declare -x SHLVL="1"
[builder]      layers_dir: /layers/samples_hello-moon
[builder]      plan_path: /tmp/samples_hello-moon-527527292/samples_hello-moon/plan.toml
[builder]      plan contents:
[builder]
[builder] ---> Done
===> EXPORTING
[exporter] no project metadata found at path 'project-metadata.toml', project metadata will not be exported
[exporter] Reusing layers from image with id '1f27b4e881679a5a6f7de03bd6c1923473663834a7fbd3a9185ee132c35e465c'
[exporter] Layer 'slice-1' SHA: sha256:ebe5fb8f72ed7022a20cc0109ca55d336af4e4928341b066c643dbd22ce3af2f
[exporter] Reusing 1/1 app layer(s)
[exporter] Reusing tarball for layer "launcher" with SHA: sha256:25c360f59ad65fc067d3511c0a5017297a7fae301e76ceaffa20771b7b8b610f
[exporter] Reusing layer 'launcher'
[exporter] Layer 'launcher' SHA: sha256:25c360f59ad65fc067d3511c0a5017297a7fae301e76ceaffa20771b7b8b610f
[exporter] Reusing tarball for layer "config" with SHA: sha256:86950ad9833c91e2d225b588c53113cd89e8d3a59cb6720050a8fbafea70bb16
[exporter] Reusing layer 'config'
[exporter] Layer 'config' SHA: sha256:86950ad9833c91e2d225b588c53113cd89e8d3a59cb6720050a8fbafea70bb16
[exporter] Adding label 'io.buildpacks.lifecycle.metadata'
[exporter] Adding label 'io.buildpacks.build.metadata'
[exporter] Adding label 'io.buildpacks.project.metadata'
[exporter] Setting CNB_LAYERS_DIR=/layers
[exporter] Setting CNB_APP_DIR=/workspace
[exporter] Setting CNB_PLATFORM_API=0.4
[exporter] Setting CNB_DEPRECATION_MODE=quiet
[exporter] Prepending /cnb/process and /cnb/lifecycle to PATH
[exporter] Warning: default process type 'web' not present in list []
[exporter] Setting ENTRYPOINT: '/cnb/lifecycle/launcher'
[exporter] *** Images (1f27b4e88167):
[exporter]       hello-arm
[exporter]
[exporter] *** Image ID: 1f27b4e881679a5a6f7de03bd6c1923473663834a7fbd3a9185ee132c35e465c
Successfully built image hello-arm
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