ci: split docker-publish into per-arch native runners

Build amd64 and arm64 natively on their own GitHub runners in
parallel, then stitch the per-arch digests into a tagged multi-arch
manifest.  Replaces the previous single-runner pattern which rebuilt
arm64 from scratch on every run because QEMU emulation + unscoped GHA
cache meant no layer reuse across invocations.

Jobs:
  build-amd64 — ubuntu-latest, native, runs smoke tests, pushes by
digest
  build-arm64 — ubuntu-24.04-arm, native (no QEMU), pushes by digest
  merge       — stitches both digests into :sha-<sha> (main) or
:<release>
  move-latest — unchanged ancestor-check logic, now needs: merge

Preserved:
  - per-commit sha-<sha> tags on main (immutable, race-free)
  - org.opencontainers.image.revision label on each per-arch image
  - dashboard subcommand smoke test (#9153 guard)
  - race-safe :latest advancement via move-latest
  - top-level cancel-in-progress: false

Changed behavior:
  - move-latest flipped to cancel-in-progress: false for
defense-in-depth.
    Top-level concurrency already serializes runs for the ref, so the
old
    cancel=true on move-latest was dead code.  Flipping to false
prevents
    any starvation mode if top-level is ever loosened.

Cache scopes separated per-arch (scope=docker-amd64 /
scope=docker-arm64)
so the two runners don't clobber each other in the gha cache backend.
This commit is contained in:
ethernet 2026-05-08 15:00:16 -04:00
parent a54cae60d4
commit bf80508d65

View file

@ -24,34 +24,34 @@ concurrency:
group: docker-${{ github.ref }}
cancel-in-progress: false
env:
IMAGE_NAME: nousresearch/hermes-agent
jobs:
build-and-push:
# ---------------------------------------------------------------------------
# Build amd64 natively. This job also runs the smoke tests (basic --help
# and the dashboard subcommand regression guard from #9153), because amd64
# is the only arch we can `load` into the local daemon on an amd64 runner.
# ---------------------------------------------------------------------------
build-amd64:
# Only run on the upstream repository, not on forks
if: github.repository == 'NousResearch/hermes-agent'
runs-on: ubuntu-latest
timeout-minutes: 60
timeout-minutes: 45
outputs:
pushed_sha_tag: ${{ steps.mark_pushed.outputs.pushed }}
digest: ${{ steps.push.outputs.digest }}
steps:
- name: Checkout code
uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
with:
submodules: recursive
# Fetch enough history to run `git merge-base --is-ancestor` in the
# move-latest job. That job reuses this checkout via its own
# actions/checkout call, but commits reachable from main up to ~1000
# back are plenty for any realistic race window.
fetch-depth: 1000
- name: Set up QEMU
uses: docker/setup-qemu-action@c7c53464625b32c7a7e944ae62b3e17d2b600130 # v3
- name: Set up Docker Buildx
uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3
# Build amd64 only so we can `load` the image for smoke testing.
# `load: true` cannot export a multi-arch manifest to the local daemon.
# The multi-arch build follows on push to main / release.
# Build once, load into the local daemon for smoke testing. Cached
# to gha with a per-arch scope; the push step below reuses every
# layer from this build.
- name: Build image (amd64, smoke test)
uses: docker/build-push-action@10e90e3645eae34f1e60eeb005ba3a3d33f178e8 # v6
with:
@ -59,9 +59,9 @@ jobs:
file: Dockerfile
load: true
platforms: linux/amd64
tags: nousresearch/hermes-agent:test
cache-from: type=gha
cache-to: type=gha,mode=max
tags: ${{ env.IMAGE_NAME }}:test
cache-from: type=gha,scope=docker-amd64
cache-to: type=gha,mode=max,scope=docker-amd64
- name: Test image starts
run: |
@ -76,7 +76,7 @@ jobs:
docker run --rm \
-v /tmp/hermes-test:/opt/data \
--entrypoint /opt/hermes/docker/entrypoint.sh \
nousresearch/hermes-agent:test --help
${{ env.IMAGE_NAME }}:test --help
- name: Test dashboard subcommand
run: |
@ -88,7 +88,7 @@ jobs:
docker run --rm \
-v /tmp/hermes-test:/opt/data \
--entrypoint /opt/hermes/docker/entrypoint.sh \
nousresearch/hermes-agent:test dashboard --help
${{ env.IMAGE_NAME }}:test dashboard --help
- name: Log in to Docker Hub
if: github.event_name == 'push' && github.ref == 'refs/heads/main' || github.event_name == 'release'
@ -97,61 +97,205 @@ jobs:
username: ${{ secrets.DOCKERHUB_USERNAME }}
password: ${{ secrets.DOCKERHUB_TOKEN }}
# Always push a per-commit SHA tag on main. This is race-free because
# every commit has a unique SHA — concurrent runs can't clobber each
# other here. We also embed the git SHA as an OCI label so the
# move-latest job (below) can read it back off the registry's `:latest`.
- name: Push multi-arch image with SHA tag (main branch)
id: push_sha
if: github.event_name == 'push' && github.ref == 'refs/heads/main'
# Push amd64 by digest only (no tag). The merge job assembles the
# tagged manifest list. `push-by-digest=true` is docker's recommended
# pattern for multi-runner multi-platform builds.
#
# We apply the OCI revision label here (and again on arm64) because
# the move-latest job reads it off the linux/amd64 sub-manifest config
# of `:latest` to decide whether it's safe to advance. The label must
# be on each per-arch image — manifest lists themselves don't carry
# image config labels.
- name: Push amd64 by digest
id: push
if: github.event_name == 'push' && github.ref == 'refs/heads/main' || github.event_name == 'release'
uses: docker/build-push-action@10e90e3645eae34f1e60eeb005ba3a3d33f178e8 # v6
with:
context: .
file: Dockerfile
push: true
platforms: linux/amd64,linux/arm64
tags: nousresearch/hermes-agent:sha-${{ github.sha }}
platforms: linux/amd64
labels: |
org.opencontainers.image.revision=${{ github.sha }}
cache-from: type=gha
cache-to: type=gha,mode=max
outputs: type=image,name=${{ env.IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true
cache-from: type=gha,scope=docker-amd64
cache-to: type=gha,mode=max,scope=docker-amd64
# Write the digest to a file and upload it as an artifact so the
# merge job can stitch both per-arch digests into a manifest list.
- name: Export digest
if: github.event_name == 'push' && github.ref == 'refs/heads/main' || github.event_name == 'release'
run: |
mkdir -p /tmp/digests
digest="${{ steps.push.outputs.digest }}"
touch "/tmp/digests/${digest#sha256:}"
- name: Upload digest artifact
if: github.event_name == 'push' && github.ref == 'refs/heads/main' || github.event_name == 'release'
uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
with:
name: digest-amd64
path: /tmp/digests/*
if-no-files-found: error
retention-days: 1
# ---------------------------------------------------------------------------
# Build arm64 natively on GitHub's free arm64 runner. This replaces the
# previous QEMU-emulated arm64 build, which was ~5-10x slower and shared
# a cache scope with amd64.
# ---------------------------------------------------------------------------
build-arm64:
if: github.repository == 'NousResearch/hermes-agent' && (github.event_name == 'push' && github.ref == 'refs/heads/main' || github.event_name == 'release')
runs-on: ubuntu-24.04-arm
timeout-minutes: 45
outputs:
digest: ${{ steps.push.outputs.digest }}
steps:
- name: Checkout code
uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
with:
submodules: recursive
- name: Set up Docker Buildx
uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3
- name: Log in to Docker Hub
uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9 # v3
with:
username: ${{ secrets.DOCKERHUB_USERNAME }}
password: ${{ secrets.DOCKERHUB_TOKEN }}
- name: Push arm64 by digest
id: push
uses: docker/build-push-action@10e90e3645eae34f1e60eeb005ba3a3d33f178e8 # v6
with:
context: .
file: Dockerfile
platforms: linux/arm64
labels: |
org.opencontainers.image.revision=${{ github.sha }}
outputs: type=image,name=${{ env.IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true
cache-from: type=gha,scope=docker-arm64
cache-to: type=gha,mode=max,scope=docker-arm64
- name: Export digest
run: |
mkdir -p /tmp/digests
digest="${{ steps.push.outputs.digest }}"
touch "/tmp/digests/${digest#sha256:}"
- name: Upload digest artifact
uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
with:
name: digest-arm64
path: /tmp/digests/*
if-no-files-found: error
retention-days: 1
# ---------------------------------------------------------------------------
# Stitch both per-arch digests into a single tagged multi-arch manifest.
# This is a registry-side operation — no building, no layer re-push —
# so it runs in ~30 seconds. On main pushes it produces :sha-<sha>.
# On releases it produces :<release_tag_name>.
# ---------------------------------------------------------------------------
merge:
if: github.repository == 'NousResearch/hermes-agent' && (github.event_name == 'push' && github.ref == 'refs/heads/main' || github.event_name == 'release')
runs-on: ubuntu-latest
needs: [build-amd64, build-arm64]
timeout-minutes: 10
outputs:
pushed_sha_tag: ${{ steps.mark_pushed.outputs.pushed }}
steps:
- name: Download digests
uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4
with:
path: /tmp/digests
pattern: digest-*
merge-multiple: true
- name: Set up Docker Buildx
uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3
- name: Log in to Docker Hub
uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9 # v3
with:
username: ${{ secrets.DOCKERHUB_USERNAME }}
password: ${{ secrets.DOCKERHUB_TOKEN }}
# Compute the tag for this run. Main pushes use sha-<sha> (so every
# commit gets its own immutable tag); releases use the release tag name.
- name: Compute tag
id: tag
run: |
if [ "${{ github.event_name }}" = "release" ]; then
echo "tag=${{ github.event.release.tag_name }}" >> "$GITHUB_OUTPUT"
else
echo "tag=sha-${{ github.sha }}" >> "$GITHUB_OUTPUT"
fi
- name: Create manifest list and push
working-directory: /tmp/digests
run: |
set -euo pipefail
# Build the arg array from each digest file (filename = the digest
# hex, with no sha256: prefix; empty file content, only the name
# matters). Using an array avoids shellcheck SC2046 and keeps
# every digest a single argv token even under pathological names.
args=()
for digest_file in *; do
args+=("${IMAGE_NAME}@sha256:${digest_file}")
done
docker buildx imagetools create \
-t "${IMAGE_NAME}:${TAG}" \
"${args[@]}"
env:
IMAGE_NAME: ${{ env.IMAGE_NAME }}
TAG: ${{ steps.tag.outputs.tag }}
- name: Inspect image
run: |
docker buildx imagetools inspect "${IMAGE_NAME}:${TAG}"
env:
IMAGE_NAME: ${{ env.IMAGE_NAME }}
TAG: ${{ steps.tag.outputs.tag }}
# Signal to move-latest that the SHA tag is live. Only on main pushes;
# releases don't trigger move-latest (they use their own release tag).
- name: Mark SHA tag pushed
id: mark_pushed
if: github.event_name == 'push' && github.ref == 'refs/heads/main'
run: echo "pushed=true" >> "$GITHUB_OUTPUT"
- name: Push multi-arch image (release)
if: github.event_name == 'release'
uses: docker/build-push-action@10e90e3645eae34f1e60eeb005ba3a3d33f178e8 # v6
with:
context: .
file: Dockerfile
push: true
platforms: linux/amd64,linux/arm64
tags: nousresearch/hermes-agent:${{ github.event.release.tag_name }}
cache-from: type=gha
cache-to: type=gha,mode=max
# Second job: moves `:latest` to point at the SHA tag the first job pushed.
# ---------------------------------------------------------------------------
# Move :latest to point at the SHA tag the merge job pushed.
#
# Has its own concurrency group with `cancel-in-progress: true`, which
# gives us the serialization we need: if a newer push arrives while an
# older run is mid-way through this job, the older run is cancelled
# before it can clobber `:latest`. Combined with the ancestor check
# below, this means `:latest` only ever moves forward in git history.
# The real serialization guarantee comes from the top-level concurrency
# group (`docker-${{ github.ref }}` with `cancel-in-progress: false`),
# which ensures at most one workflow run for this ref executes at a time.
# That means two move-latest steps for the same ref cannot overlap.
#
# This job has its own concurrency group as defense-in-depth: if the
# top-level group is ever loosened, queued move-latests will run serially
# in arrival order, each one running the ancestor check below and either
# advancing :latest or skipping. `cancel-in-progress: false` matches the
# top-level setting — we don't want rapid pushes to cancel a queued
# move-latest, because the ancestor check is the real safety mechanism
# and queueing is cheap (move-latest is a ~30s registry op).
#
# Combined with the ancestor check, this means :latest only ever moves
# forward in git history.
# ---------------------------------------------------------------------------
move-latest:
if: |
github.repository == 'NousResearch/hermes-agent'
&& github.event_name == 'push'
&& github.ref == 'refs/heads/main'
&& needs.build-and-push.outputs.pushed_sha_tag == 'true'
needs: build-and-push
&& needs.merge.outputs.pushed_sha_tag == 'true'
needs: merge
runs-on: ubuntu-latest
timeout-minutes: 10
concurrency:
group: docker-move-latest-${{ github.ref }}
cancel-in-progress: true
cancel-in-progress: false
steps:
- name: Checkout code
uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
@ -167,11 +311,11 @@ jobs:
username: ${{ secrets.DOCKERHUB_USERNAME }}
password: ${{ secrets.DOCKERHUB_TOKEN }}
# Read the git revision label off the current `:latest` manifest, then
# Read the git revision label off the current :latest manifest, then
# use `git merge-base --is-ancestor` to check whether our commit is a
# descendant of it. If `:latest` doesn't exist yet, or its label is
# descendant of it. If :latest doesn't exist yet, or its label is
# missing, we treat that as "safe to publish". If another run already
# advanced `:latest` past us (or diverged), we skip and leave it alone.
# advanced :latest past us (or diverged), we skip and leave it alone.
- name: Decide whether to move :latest
id: latest_check
run: |