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reproducible-builds.yml
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# Verify that Constellation builds are reproducible.
#
# The build-* jobs' matrix has three dimensions: a list of targets to build, a
# list of runners to build on and a method of installing dependencies. The
# produced binaries and OS images are expected to be bit-for-bit identical,
# without any dependencies on the runtime setup details.
#
# The compare-* jobs only have the target dimension. They obtain the built
# targets from all runners and check that there are no diffs between them.
name: Reproducible Builds
on:
workflow_dispatch:
schedule:
- cron: "45 06 * * 1" # Every Monday at 6:45am
pull_request:
paths:
- .github/workflows/reproducible-builds.yml
jobs:
build-binaries:
strategy:
fail-fast: false
matrix:
target:
- "cli_enterprise_darwin_amd64"
- "cli_enterprise_darwin_arm64"
- "cli_enterprise_linux_amd64"
- "cli_enterprise_linux_arm64"
- "cli_enterprise_windows_amd64"
runner:
- "ubuntu-24.04"
- "ubuntu-22.04"
deps:
- conventional
- eccentric
env:
bazel_target: "//cli:${{ matrix.target }}"
binary: "${{ matrix.target }}-${{ matrix.runner }}-${{ matrix.deps }}"
runs-on: ${{ matrix.runner }}
steps:
- name: Checkout
uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
with:
ref: ${{ !github.event.pull_request.head.repo.fork && github.head_ref || '' }}
- name: Setup dependencies
uses: ./.github/actions/setup_bazel_nix
if: matrix.deps == 'conventional'
- name: Setup dependencies (eccentric)
if: matrix.deps == 'eccentric'
run: |
version=$(cat .bazelversion)
mkdir -p "$HOME/.local/bin"
curl -fsSL -o "$HOME/.local/bin/bazel" "https://github.com/bazelbuild/bazel/releases/download/$version/bazel-$version-linux-x86_64"
chmod a+x "$HOME/.local/bin/bazel"
echo "$HOME/.local/bin" >> "$GITHUB_PATH"
curl -fsSL -o "$HOME/.local/bin/nix-installer" https://github.com/DeterminateSystems/nix-installer/releases/download/v0.32.2/nix-installer-x86_64-linux # renovate:github-release
chmod a+x "$HOME/.local/bin/nix-installer"
"$HOME/.local/bin/nix-installer" install --no-confirm
- name: Build
shell: bash
run: bazel build "${bazel_target}"
- name: Copy
shell: bash
run: cp "$(bazel cquery --output=files "${bazel_target}")" "${binary}"
- name: Collect hash (linux)
shell: bash
if: runner.os == 'Linux'
run: sha256sum "${binary}" | tee "${binary}.sha256"
- name: Collect hash (macOS)
shell: bash
if: runner.os == 'macOS'
run: shasum -a 256 "${binary}" | tee "${binary}.sha256"
- name: Upload binary artifact
uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
with:
name: "binaries-${{ matrix.target }}-${{ matrix.runner }}-${{ matrix.deps }}"
path: "${{ env.binary }}"
- name: Upload hash artifact
uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
with:
name: "sha256sums-${{ matrix.target }}-${{ matrix.runner }}-${{ matrix.deps }}"
path: "${{ env.binary }}.sha256"
build-osimages:
strategy:
fail-fast: false
matrix:
target:
- "azure_azure-sev-snp_stable"
- "aws_aws-nitro-tpm_console"
- "qemu_qemu-vtpm_debug"
- "gcp_gcp-sev-snp_nightly"
runner: ["ubuntu-24.04", "ubuntu-22.04"]
env:
bazel_target: "//image/system:${{ matrix.target }}"
binary: "osimage-${{ matrix.target }}-${{ matrix.runner }}"
runs-on: ${{ matrix.runner }}
steps:
- name: Remove security hardening features
if: matrix.runner == 'ubuntu-24.04'
shell: bash
run: |
# Taken from https://github.com/systemd/mkosi/blob/fcacc94b9f72d9b6b1f03779b0c6e07209ceb54b/action.yaml#L42-L57.
sudo sysctl --ignore --write kernel.apparmor_restrict_unprivileged_unconfined=0
sudo sysctl --ignore --write kernel.apparmor_restrict_unprivileged_userns=0
# This command fails with a non-zero error code even though it unloads the apparmor profiles.
# https://gitlab.com/apparmor/apparmor/-/issues/403
sudo aa-teardown || true
sudo apt-get remove -y apparmor
- name: Checkout
uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
with:
ref: ${{ !github.event.pull_request.head.repo.fork && github.head_ref || '' }}
- name: Setup bazel
uses: ./.github/actions/setup_bazel_nix
- name: Build
shell: bash
run: bazel build "${bazel_target}"
- name: Copy
shell: bash
run: cp "$(bazel cquery --output=files "${bazel_target}")/constellation.raw" "${binary}"
- name: Collect hash (linux)
shell: bash
if: runner.os == 'Linux'
run: sha256sum "${binary}" | tee "${binary}.sha256"
- name: Collect hash (macOS)
shell: bash
if: runner.os == 'macOS'
run: shasum -a 256 "${binary}" | tee "${binary}.sha256"
- name: Upload binary artifact
uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
with:
name: "osimages-${{ matrix.target }}-${{ matrix.runner }}"
path: "${{ env.binary }}"
- name: Upload hash artifact
uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
with:
name: "sha256sums-${{ matrix.target }}-${{ matrix.runner }}"
path: "${{ env.binary }}.sha256"
compare-binaries:
needs: build-binaries
strategy:
fail-fast: false
matrix:
target:
- "cli_enterprise_darwin_amd64"
- "cli_enterprise_darwin_arm64"
- "cli_enterprise_linux_amd64"
- "cli_enterprise_linux_arm64"
- "cli_enterprise_windows_amd64"
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
with:
ref: ${{ !github.event.pull_request.head.repo.fork && github.head_ref || '' }}
- name: Download binaries
uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
with:
pattern: "binaries-${{ matrix.target }}-*"
merge-multiple: true
- name: Hash
shell: bash
if: runner.os == 'Linux'
run: sha256sum cli_enterprise*
- name: Compare binaries
shell: bash
run: |
# shellcheck disable=SC2207,SC2116
list=($(echo "cli_enterprise*"))
diff -s --to-file="${list[0]}" "${list[@]:1}" | tee "${GITHUB_STEP_SUMMARY}"
compare-osimages:
needs: build-osimages
strategy:
fail-fast: false
matrix:
target:
- "azure_azure-sev-snp_stable"
- "aws_aws-nitro-tpm_console"
- "qemu_qemu-vtpm_debug"
- "gcp_gcp-sev-snp_nightly"
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
with:
ref: ${{ !github.event.pull_request.head.repo.fork && github.head_ref || '' }}
- name: Download os images
uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
with:
pattern: "osimages-${{ matrix.target }}-*"
merge-multiple: true
- name: Hash
shell: bash
if: runner.os == 'Linux'
run: sha256sum osimage-*
- name: Compare os images
shell: bash
run: |
# shellcheck disable=SC2207,SC2116
list=($(echo "osimage-*"))
diff -s --to-file="${list[0]}" "${list[@]:1}" | tee "${GITHUB_STEP_SUMMARY}"