From 7a520a24de4cfe1545ca1f9fa64d59697592cb8c Mon Sep 17 00:00:00 2001
From: Ulas <ulas@kalayci.cloud>
Date: Thu, 2 Apr 2026 21:58:39 +0200
Subject: [PATCH] ci: add GitHub Actions workflow to publish Docker image to
 GHCR

Builds and pushes to ghcr.io/ulsklyc/oikos on every push to main
and on version tags. Tags: branch name, semver, short SHA.
Uses Docker layer caching via GitHub Actions cache.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 .github/workflows/docker-publish.yml | 54 ++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 .github/workflows/docker-publish.yml

diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
new file mode 100644
index 0000000..cc14f9a
--- /dev/null
+++ b/.github/workflows/docker-publish.yml
@@ -0,0 +1,54 @@
+name: Docker Publish
+
+on:
+  push:
+    branches: [main]
+    tags: ['v*']
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  packages: write
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push:
+    name: Build & Push Image
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels)
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=ref,event=branch
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=sha
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max