# Docker image publishing

> multi-arch image publishing to GHCR via GitHub Actions

- Skill: `rcarmo/docker-image-publishing` (Agent Skill)
- Install (CLI): `npx skillmds@latest add rcarmo/docker-image-publishing`
- Raw SKILL.md: https://api.skillmd.com/api/skills/rcarmo/docker-image-publishing/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: DevOps & Infra
- Author: rcarmo (https://skillmd.com/u/rcarmo)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/rcarmo/docker-image-publishing

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# Skill: Docker image publishing

## Goal
Provide a reusable GitHub Actions workflow to build/push multi-arch images to GHCR on tag pushes.

## Conventions
- Publish on tags `v*`.
- Use native Intel or ARM runners for CI/CD. Don't use QEMU.
- Use buildx + per-arch digest builds, then merge into a manifest.
- Use `docker/metadata-action` for semver tag derivation.
- Prioritize minimal images, taking advantage of caching and layers.
- Prefer reproducible builds (minimize network fetches at runtime; pin versions when practical).

## Files
- `.github/workflows/docker-publish.yml`