Update build workflow to use Skopeo

Refactor build workflow to use Skopeo for image pushing and signing.
This commit is contained in:
humocs-man
2026-05-17 13:59:36 +02:00
committed by GitHub
parent 58e29223b4
commit 36e0a2a0bc
+37 -45
View File
@@ -9,8 +9,8 @@ on:
env:
IMAGE_DESC: "Custom Fedora bootc image"
IMAGE_NAME: "${{ github.event.repository.name }}" # output image name, usually same as repo name
IMAGE_REGISTRY: "ghcr.io/${{ github.repository_owner }}" # do not edit
IMAGE_NAME: "${{ github.event.repository.name }}"
IMAGE_REGISTRY: "ghcr.io/${{ github.repository_owner }}"
DEFAULT_TAG: "stable"
concurrency:
@@ -95,6 +95,10 @@ jobs:
set -x
BASE_IMAGE="${{ env.IMAGE_NAME }}:${{ env.DEFAULT_TAG }}"
# 1. Das kritische ostree-Label im Runner sichern, bevor wir das Image zerlegen
OSTREE_DIFFID=$(podman inspect $BASE_IMAGE --format '{{index .Config.Labels "ostree.final-diffid"}}' 2>/dev/null || echo "")
echo "OSTREE_DIFFID=$OSTREE_DIFFID" >> $GITHUB_ENV
# Rootfs extrahieren
CONTAINER_ID=$(podman create $BASE_IMAGE)
mkdir -p ./chunkah-in ./chunkah-out
@@ -103,16 +107,8 @@ jobs:
# Die komplette Image-Config sichern
podman inspect $BASE_IMAGE --format '{{json .Config}}' > ./chunkah-config.json
# Das kritische ostree-Label explizit auslesen, falls vorhanden
OSTREE_DIFFID=$(podman inspect $BASE_IMAGE --format '{{index .Config.Labels "ostree.final-diffid"}}' 2>/dev/null || echo "")
# Chunkah-Lauf: Annotation explizit übergeben
ANNOTATION_ARG=""
if [ ! -z "$OSTREE_DIFFID" ]; then
ANNOTATION_ARG="--annotation ostree.final-diffid=$OSTREE_DIFFID"
fi
# Chunkah-Lauf
podman run --rm \
-v ./chunkah-in:/inputs:z \
-v ./chunkah-out:/outputs:z \
@@ -120,31 +116,12 @@ jobs:
quay.io/coreos/chunkah:latest \
build \
--config /config.json \
$ANNOTATION_ARG \
--prune /sysroot/ \
--max-layers 128 \
--compressed \
--output /outputs/image.ociarchive \
--rootfs /inputs
# WIEDER EINGEFÜGT: Das OCI-Archiv in Podman laden, damit die Action es findet
podman rmi $BASE_IMAGE || true
podman load -i ./chunkah-out/image.ociarchive
# Image sauber taggen
IMAGE_ID=$(podman images --filter "dangling=true" --format "{{.ID}}" | head -n 1)
if [ -z "$IMAGE_ID" ]; then
IMAGE_ID=$(podman images --format "{{.ID}} {{.Repository}}" | grep -v "chunkah" | head -n 1 | awk '{print $1}')
fi
podman tag $IMAGE_ID $BASE_IMAGE
# WIEDER EINGEFÜGT: Die restlichen Tags für Datum, etc. lokal erzeugen
- name: Tag for registry
run: |
for tag in ${{ steps.metadata.outputs.tags }}; do
podman tag ${{ env.IMAGE_NAME }}:${{ env.DEFAULT_TAG }} ${{ env.IMAGE_NAME }}:$tag
done
- name: Login to GitHub Container Registry
uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 # v3
if: github.event_name != 'pull_request' && github.ref == format('refs/heads/{0}', github.event.repository.default_branch)
@@ -153,21 +130,35 @@ jobs:
username: ${{ github.actor }}
password: ${{ secrets.GITHUB_TOKEN }}
- name: Push To GHCR
uses: redhat-actions/push-to-registry@5ed88d269cf581ea9ef6dd6806d01562096bee9c # v2
- name: Push to GHCR via Skopeo
if: github.event_name != 'pull_request' && github.ref == format('refs/heads/{0}', github.event.repository.default_branch)
id: push
env:
REGISTRY_USER: ${{ github.actor }}
REGISTRY_PASSWORD: ${{ github.token }}
with:
registry: ${{ env.IMAGE_REGISTRY }}
image: ${{ env.IMAGE_NAME }}
tags: ${{ steps.metadata.outputs.tags }}
username: ${{ env.REGISTRY_USER }}
password: ${{ env.REGISTRY_PASSWORD }}
# KORREKTUR: "image-archive" entfernt, da ungültig.
extra-args: --compression-format=zstd --compression-level=5
run: |
set -x
# Skopeo-Authentisierung über die Docker-Config des vorherigen Login-Schritts laden
export REGISTRY_AUTH_FILE=$HOME/.docker/config.json
REGISTRY_PATH="${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}"
# Vorbereitung für das Injezieren des Labels in die OCI Config auf der Registry
PATCH_ARG=""
if [ ! -z "${{ env.OSTREE_DIFFID }}" ]; then
# Erstellt das exakte JSON-Fragment, das Skopeo in die Image-Config patcht
PATCH_ARG="--patch-config {\"config\":{\"Labels\":{\"ostree.final-diffid\":\"${{ env.OSTREE_DIFFID }}\"}}}"
fi
# Loop über alle von metadata-action generierten Tags
for tag in ${{ steps.metadata.outputs.tags }}; do
skopeo copy \
$PATCH_ARG \
--dest-compress-format=zstd \
--dest-compress-level=5 \
oci-archive:./chunkah-out/image.ociarchive \
docker://$REGISTRY_PATH:$tag
done
# Den finalen Digest ermitteln und für den nächsten Schritt in GITHUB_ENV schreiben
DIGEST=$(skopeo inspect oci-archive:./chunkah-out/image.ociarchive --format '{{.Digest}}')
echo "FINAL_IMAGE_DIGEST=$DIGEST" >> $GITHUB_ENV
- name: Install Cosign
uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6 # v4.1.2
@@ -176,7 +167,8 @@ jobs:
- name: Sign container image
if: github.event_name != 'pull_request' && github.ref == format('refs/heads/{0}', github.event.repository.default_branch)
run: |
cosign sign -y --key env://COSIGN_PRIVATE_KEY "${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}@${{ steps.push.outputs.digest }}"
# Nutzt den über Skopeo ermittelten Digest für das statische Signieren
cosign sign -y --key env://COSIGN_PRIVATE_KEY "${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}@${{ env.FINAL_IMAGE_DIGEST }}"
env:
COSIGN_EXPERIMENTAL: false
COSIGN_PRIVATE_KEY: ${{ secrets.SIGNING_SECRET }}