oxipng/.github/workflows/docker.yml
Alejandro González 4e80dd009a
ci: cherry-pick changes from PR #815
That PR got hard to review and confidently merge, so I'm cherry-picking
some of the good ideas from it in a format that feels more comfortable
to me. Thanks @vlakoff for the original PR!

Co-authored-by: vlakoff <544424+vlakoff@users.noreply.github.com>
2026-05-08 23:37:53 +02:00

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name: docker
on:
push:
branches:
- master
tags:
- v*.*.*
pull_request:
types:
- opened
- synchronize
workflow_dispatch:
inputs:
use_cache:
description: "Use build cache"
required: true
type: boolean
default: true
concurrency:
# If we ever end up with two concurrent Docker build jobs for the same commit
# and same versioning context, the former should be cancelled
group: docker-${{ github.sha }}-${{ github.ref_type }}-${{ github.head_ref }}
cancel-in-progress: true
jobs:
build:
uses: docker/github-builder/.github/workflows/build.yml@v1
permissions:
contents: read
packages: write
id-token: write
attestations: write
with:
output: image
platforms: linux/amd64,linux/arm64
push: ${{ github.event_name != 'pull_request' }}
cache: ${{ github.event_name != 'workflow_dispatch' || inputs.use_cache }}
# We don't sign the image because ghcr.io doesn't support OCI Referrers API yet, and the fallback relies on pushing new tags on each build
# https://github.com/docker/github-builder/issues/109#issuecomment-3885082486
# https://github.com/opencontainers/distribution-spec/blob/v1.1.0/spec.md#backwards-compatibility
sign: false
sbom: true
meta-images: ghcr.io/${{ github.repository }}
meta-tags: |
type=ref,event=branch
type=ref,event=pr
type=semver,pattern={{raw}}
set-meta-annotations: true
set-meta-labels: true
labels: |
org.opencontainers.image.title=Oxipng
annotations: |
org.opencontainers.image.title=Oxipng
secrets:
registry-auths: |
- registry: ghcr.io
username: ${{ github.actor }}
password: ${{ secrets.GITHUB_TOKEN }}