oxipng/.github/workflows/docker.yml
vlakoff ccbd2f971c
Fix Docker image push condition to exclude merge queue
The push condition only excluded pull_request events, causing
the builder to attempt a push on merge_group events too.

Since no meta-tag rule matches merge_group, this results in
a push with no tag, which fails or produces a broken image.

Now only pushes on branch/tag push and workflow_dispatch.
2026-04-30 09:50:55 +02:00

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name: docker
on:
push:
branches:
- 'master'
tags:
- 'v*.*.*'
pull_request:
merge_group:
types:
- checks_requested
workflow_dispatch:
inputs:
use_cache:
description: "Use build cache"
required: true
type: boolean
default: true
concurrency:
group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.ref }}
cancel-in-progress: true
jobs:
build:
uses: docker/github-builder/.github/workflows/build.yml@v1
# Exclude 'push' events on Merge Queue branches, as they are already
# handled by the 'merge_group' event.
if: (!(github.event_name == 'push' && startsWith(github.ref, 'refs/heads/gh-readonly-queue/')))
permissions:
contents: read
packages: write
id-token: write
attestations: write
with:
context: . # Use local checkout to support GitHub Merge Queue
output: image
platforms: linux/amd64,linux/arm64
push: ${{ github.event_name != 'pull_request' && github.event_name != 'merge_group' }}
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 }}