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improve comment

improve comment #56

Workflow file for this run

name: Test Docker image
on:
push:
branches:
- '*'
- '!master'
concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}
env:
REGISTRY: ghcr.io
IMAGE_NAME: ${{ github.repository }}
jobs:
docker:
runs-on: ubuntu-latest
permissions:
contents: read
packages: write
steps:
- name: Free space
# HACK fixes 'No space left on device'
# see: https://github.com/orgs/community/discussions/25678#discussioncomment-5242449
# NOTE we don't use those, we run everything inside Docker, anyway
run: rm -rf /opt/hostedtoolcache
- name: Set up QEMU
uses: docker/setup-qemu-action@v3
- name: Set up Docker Buildx
uses: docker/setup-buildx-action@v3
- name: Extract metadata (tags, labels) for Docker
id: meta
uses: docker/metadata-action@v5
with:
images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
- name: Build and save
id: docker_build
uses: docker/build-push-action@v5
with:
push: false
tags: ${{ steps.meta.outputs.tags }}
labels: ${{ steps.meta.outputs.labels }}
outputs: type=docker,dest=./vpipe-docker.tar.zst,compression=zstd,compression-level=6
- name: Upload artifact
uses: actions/upload-artifact@v3
if: "( !contains(github.ref, 'master') && !startsWith(github.ref, 'refs/tags') )"
with:
name: vpipe-docker
path: ./vpipe-docker.tar.zst