ci: add Docker Hub publish workflow

Author: mircothibes

.github/workflows/ci.yml

@@ -3,6 +3,8 @@ name: CI
 on:
   push:
     branches: [ "main" ]
+    tags:
+      - "v*"
   pull_request:
     branches: [ "main" ]
 
@@ -18,26 +20,19 @@ jobs:
         with:
           python-version: "3.12"
 
-      - name: Install project and dev deps
-        run: |
-          python -m pip install --upgrade pip
-          pip install -e ".[dev]"
-          # tools (explicit, in case dev extras change)
-          pip install ruff black pytest
+      - name: Install (dev)
+        run: make dev
 
-      - name: Ruff (lint)
-        run: ruff check .
+      - name: Lint
+        run: make lint
 
-      - name: Black (format check)
-        run: black --check .
-
-      - name: Pytest
-        run: pytest -q
+      - name: Test
+        run: make test
 
   docker-build:
     runs-on: ubuntu-latest
     needs: test
-    if: github.event_name == 'push' # build only on push, not PR
+    if: github.event_name == 'push'
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -50,6 +45,34 @@ jobs:
         with:
           context: .
           file: ./Dockerfile
-          tags: mvtk/sysinfo-cli:ci
+          tags: sysinfo-cli:ci
           load: true
 
+  publish:
+    runs-on: ubuntu-latest
+    needs: docker-build
+    if: startsWith(github.ref, 'refs/tags/')
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and Push to Docker Hub
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: |
+            mircothibes/sysinfo-cli:latest
+            mircothibes/sysinfo-cli:${{ github.ref_name }}
+
+