From 4ef62e24fa75da71d916d0db50c23d7b967fad23 Mon Sep 17 00:00:00 2001
From: Egor Tensin <egor@tensin.name>
Date: Fri, 16 Oct 2026 20:46:51 +0500
Subject: workflows/ci: proper tags for Docker Hub images

---
 .github/workflows/ci.yml | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

(limited to '.github/workflows')

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f8d3f16..5c7281c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -93,6 +93,19 @@ jobs:
         uses: actions/checkout@v7
         with:
           submodules: recursive
+      # https://github.com/docker/metadata-action#semver
+      - id: meta
+        name: Docker Hub metadata
+        uses: docker/metadata-action@v6
+        with:
+          images: '${{ secrets.DOCKERHUB_USERNAME }}/math-${{ matrix.project }}'
+          flavor: |
+            latest=auto
+          tags: |
+            type=ref,event=branch
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v4
       - name: Set up Docker Buildx
@@ -122,6 +135,7 @@ jobs:
           # https://stackoverflow.com/a/74552407/514684
           context: .
           file: '${{ matrix.project }}/Dockerfile'
+          labels: '${{ steps.meta.outputs.labels }}'
           platforms: '${{ steps.params.outputs.platforms }}'
           push: '${{ steps.params.outputs.push }}'
-          tags: '${{ secrets.DOCKERHUB_USERNAME }}/math-${{ matrix.project }}:latest'
+          tags: '${{ steps.meta.outputs.tags }}'
-- 
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