configure CI to push Helm charts

.gitea/workflows/ci.yaml

@@ -19,6 +19,12 @@ jobs:
       checks: write
       contents: write
     steps:
+      - name: Login to Docker
+        uses: docker/login-action@v3
+        with:
+          username: ${{ vars.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
       - name: Checkout
         uses: actions/checkout@v4
 
@@ -57,12 +63,26 @@ jobs:
     env:
       DOCKER_ORG: ryanc
       DOCKER_LATEST: latest
+    defaults:
+      run:
+        shell: bash
     steps:
       - name: Checkout
         uses: actions/checkout@v4
         with:
           fetch-depth: 0 # all history for all branches and tags
 
+      - name: Prepare
+        id: prep
+        run: |
+          VERSION="sha-${GITHUB_SHA::8}"
+          if [[ "$GITHUB_REF" == refs/tags/* ]]; then
+            VERSION="${GITHUB_REF/refs\/tags\//}"
+          fi
+          printf "GITHUB_REF=%s\n" "$GITHUB_REF"
+          printf "GITHUB_SHA=%s\n" "$GITHUB_SHA"
+          printf "VERSION=%s\n" "$VERSION" | tee -a "$GITHUB_OUTPUT"
+
       - name: Docker meta
         id: meta
         uses: docker/metadata-action@v5
@@ -94,3 +114,14 @@ jobs:
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
+
+      - name: Setup Helm
+        uses: azure/setup-helm@v4.3.0
+
+      - name: Publish Helm chart
+        if: ${{ contains(github.ref, 'refs/tags/') }}
+        run: |
+          HELM_VERSION="${{ steps.prep.outputs.VERSION }}"
+          HELM_VERSION="${HELM_VERSION#v}"
+          helm package charts/kubernaut
+          helm push "kubernaut-${HELM_VERSION}.tgz" oci://git.kill0.net/ryanc/helm-charts