Publish portable nextcloud-clamav chart

.gitea/workflows/chart.yml

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+name: Validate, publish and promote nextcloud-clamav chart
+on:
+  push:
+  pull_request:
+jobs:
+  chart:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: azure/setup-helm@v4
+        with:
+          version: v4.3.0
+      - name: Validate chart
+        run: |
+          python3 -m venv "${RUNNER_TEMP}/chart-test"
+          "${RUNNER_TEMP}/chart-test/bin/pip" install PyYAML
+          PATH="${RUNNER_TEMP}/chart-test/bin:${PATH}" bash chart/test.sh
+      - name: Select immutable chart version
+        if: gitea.ref == 'refs/heads/main'
+        run: printf 'CHART_VERSION=%s\n' "$(./scripts/chart-version.sh)" >> "${GITHUB_ENV}"
+      - name: Publish chart
+        if: gitea.ref == 'refs/heads/main'
+        env:
+          PACKAGE_USERNAME: ${{ secrets.PACKAGE_USERNAME }}
+          PACKAGE_TOKEN: ${{ secrets.PACKAGE_TOKEN }}
+        run: |
+          set -euo pipefail
+          test -n "${PACKAGE_USERNAME}" && test -n "${PACKAGE_TOKEN}"
+          mkdir -p .chart-packages
+          helm package chart/nextcloud-clamav --destination .chart-packages --version "${CHART_VERSION}"
+          curl --fail --silent --show-error --user "${PACKAGE_USERNAME}:${PACKAGE_TOKEN}" \
+            --request POST --upload-file ".chart-packages/nextcloud-clamav-${CHART_VERSION}.tgz" \
+            https://code.brunner.ninja/api/packages/feedc0de/helm/api/charts
+      - name: Check current main
+        id: current-main
+        if: gitea.ref == 'refs/heads/main'
+        env:
+          COMMIT_SHA: ${{ gitea.sha }}
+        run: |
+          git fetch --no-tags origin main
+          if test "$(git rev-parse FETCH_HEAD)" = "${COMMIT_SHA}"; then
+            echo 'promote=true' >> "${GITEA_OUTPUT}"
+          else
+            echo 'promote=false' >> "${GITEA_OUTPUT}"
+          fi
+      - uses: actions/checkout@v4
+        if: steps.current-main.outputs.promote == 'true'
+        with:
+          repository: feedc0de/homelab-gitops
+          ref: main
+          token: ${{ secrets.GITOPS_TOKEN }}
+          path: homelab-gitops
+      - name: Promote chart
+        if: steps.current-main.outputs.promote == 'true'
+        working-directory: homelab-gitops
+        run: |
+          set -euo pipefail
+          ./scripts/update-chart-version.sh nextcloud-clamav "${CHART_VERSION}"
+          git config user.name feedc0de
+          git config user.email feedc0de@users.noreply.code.brunner.ninja
+          git add bootstrap/nextcloud-clamav.yaml
+          if git diff --cached --quiet; then exit 0; fi
+          git commit -m "Deploy nextcloud-clamav chart ${CHART_VERSION}"
+          for attempt in 1 2 3; do
+            git push origin HEAD:main && exit 0
+            test "${attempt}" = 3 && exit 1
+            git fetch origin main
+            git rebase origin/main
+          done

.gitignore

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+.chart-packages/

README.md

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+# Nextcloud ClamAV daemon
+
+This repository maintains a portable Helm chart for the Nextcloud ClamAV daemon integration.
+It is used with the upstream Nextcloud Helm release. The application image is
+`ghcr.io/nextcloud-releases/aio-clamav:20260825_084538`; the chart selects that tested tag through
+`Chart.yaml.appVersion`, while GitOps selects only the chart version.
+
+The chart owns a PVC for virus signatures. Set its storage class and size for your cluster, and preserve the claim during adoption.
+
+```sh
+helm repo add brunner.ninja https://brunner.ninja/charts
+helm repo update brunner.ninja
+VALUES_FILE=values.yaml ./install.sh
+```
+
+The chart and its templates own the Kubernetes workload contract; set hostnames,
+Ingress annotations, resources, and Secret names through values. The live
+[homelab configuration](https://code.brunner.ninja/feedc0de/homelab-gitops/src/branch/main/apps/nextcloud)
+is an example, not a portable default. Run `bash chart/test.sh` before
+publishing.
+
+The Git tag follows the actual upstream release `20260825_084538`. Its first chart
+package is `20260825.0.0-r084538`; later chart-only commits append the commit count
+and Git hash. CI publishes the package to the indexed
+`https://brunner.ninja/charts` repository and promotes only this chart's
+Argo CD targetRevision.

chart/nextcloud-clamav/Chart.yaml

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+apiVersion: v2
+name: nextcloud-clamav
+description: ClamAV daemon for Nextcloud
+type: application
+version: 0.0.0
+appVersion: "20260825_084538"

chart/nextcloud-clamav/templates/resources.yaml

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+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: {{ .Release.Name }}
+  labels:
+    app.kubernetes.io/name: nextcloud-clamav
+    app.kubernetes.io/instance: {{ .Values.nextcloudReleaseName }}
+spec:
+  accessModes:
+  - ReadWriteOnce
+  {{- if .Values.persistence.storageClass }}
+  storageClassName: {{ .Values.persistence.storageClass }}
+  {{- end }}
+  resources:
+    requests:
+      storage: {{ .Values.persistence.size }}
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ .Release.Name }}
+  labels:
+    app.kubernetes.io/name: nextcloud-clamav
+    app.kubernetes.io/instance: {{ .Values.nextcloudReleaseName }}
+spec:
+  replicas: 1
+  revisionHistoryLimit: 3
+  strategy:
+    type: Recreate
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: nextcloud-clamav
+      app.kubernetes.io/instance: {{ .Values.nextcloudReleaseName }}
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: nextcloud-clamav
+        app.kubernetes.io/instance: {{ .Values.nextcloudReleaseName }}
+    spec:
+      automountServiceAccountToken: false
+      securityContext:
+        fsGroup: 100
+        fsGroupChangePolicy: OnRootMismatch
+        runAsGroup: 100
+        runAsNonRoot: true
+        runAsUser: 100
+        seccompProfile:
+          type: RuntimeDefault
+      initContainers:
+      - name: clamav-signatures
+        image: "{{ .Values.image.repository }}:{{ .Chart.AppVersion }}"
+        imagePullPolicy: IfNotPresent
+        command:
+        - /bin/sh
+        - -eu
+        - -c
+        - test -s /var/lib/clamav/main.cvd -a -s /var/lib/clamav/daily.cvd || freshclam --foreground --stdout
+        resources:
+          {{- toYaml .Values.initResources | nindent 10 }}
+        securityContext:
+          allowPrivilegeEscalation: false
+          capabilities:
+            drop:
+            - ALL
+        volumeMounts:
+        - name: signatures
+          mountPath: /var/lib/clamav
+      containers:
+      - name: clamav
+        image: "{{ .Values.image.repository }}:{{ .Chart.AppVersion }}"
+        imagePullPolicy: IfNotPresent
+        env:
+        - name: AIO_LOG_LEVEL
+          value: info
+        - name: MAX_SIZE
+          value: {{ .Values.maxSize | quote }}
+        - name: TZ
+          value: {{ .Values.timezone | quote }}
+        ports:
+        - name: clamd
+          containerPort: 3310
+        readinessProbe:
+          exec:
+            command:
+            - /healthcheck.sh
+          failureThreshold: 9
+          initialDelaySeconds: 60
+          periodSeconds: 30
+          timeoutSeconds: 30
+        livenessProbe:
+          exec:
+            command:
+            - /healthcheck.sh
+          failureThreshold: 9
+          initialDelaySeconds: 60
+          periodSeconds: 30
+          timeoutSeconds: 30
+        resources:
+          {{- toYaml .Values.resources | nindent 10 }}
+        securityContext:
+          allowPrivilegeEscalation: false
+          capabilities:
+            drop:
+            - ALL
+        volumeMounts:
+        - name: signatures
+          mountPath: /var/lib/clamav
+      volumes:
+      - name: signatures
+        persistentVolumeClaim:
+          claimName: {{ .Release.Name }}
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ .Release.Name }}
+  labels:
+    app.kubernetes.io/name: nextcloud-clamav
+    app.kubernetes.io/instance: {{ .Values.nextcloudReleaseName }}
+spec:
+  selector:
+    app.kubernetes.io/name: nextcloud-clamav
+    app.kubernetes.io/instance: {{ .Values.nextcloudReleaseName }}
+  ports:
+  - name: clamd
+    port: 3310
+    targetPort: clamd

chart/nextcloud-clamav/values.yaml

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+image:
+  repository: ghcr.io/nextcloud-releases/aio-clamav
+nextcloudReleaseName: nextcloud
+persistence:
+  storageClass: ""
+  size: 2Gi
+maxSize: 512M
+timezone: UTC
+initResources: {}
+resources: {}

chart/test.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+chart_name=$(basename "$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/nextcloud-clamav" && pwd)")
+chart_dir=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/nextcloud-clamav" && pwd)
+helm lint "$chart_dir" --strict
+python3 - "$chart_dir" "$chart_name" <<'PY'
+import subprocess,sys,yaml
+chart,name=sys.argv[1:]
+with open(chart+'/Chart.yaml') as f: metadata=yaml.safe_load(f)
+def render(*args):
+ output=subprocess.check_output(['helm','template',name,chart,'--namespace','nextcloud',*args],text=True)
+ return {(x['kind'],x['metadata']['name']):x for x in yaml.safe_load_all(output) if x}
+default=render()
+enabled=render('--set','ingress.enabled=true','--set','monitoring.enabled=true')
+assert ('Service',name) in default
+assert ('Ingress',name) not in default
+if name!='nextcloud-clamav':
+ assert ('Ingress',name) in enabled
+if name=='nextcloud-notify-push':
+ assert ('ServiceMonitor',name) in enabled
+else:
+ assert ('Deployment',name) in default
+ images=[c['image'] for c in default['Deployment',name]['spec']['template']['spec'].get('initContainers',[])+default['Deployment',name]['spec']['template']['spec']['containers']]
+ assert all(image.endswith(':'+metadata['appVersion']) for image in images)
+if name=='nextcloud-clamav':
+ assert ('PersistentVolumeClaim',name) in default
+assert not any(kind=='Secret' for kind,_ in enabled)
+PY

install.sh

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+#!/bin/sh
+set -eu
+chart_name=$(basename "$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)")
+namespace=${NAMESPACE:-nextcloud}
+values_file=${VALUES_FILE:-values.yaml}
+if [ ! -f "$values_file" ]; then
+  echo "Values file not found: $values_file" >&2
+  exit 1
+fi
+helm repo add brunner.ninja https://brunner.ninja/charts --force-update
+helm repo update brunner.ninja
+helm upgrade --install "$chart_name" "brunner.ninja/$chart_name" \
+  --namespace "$namespace" --create-namespace --values "$values_file" \
+  --wait --timeout 15m

scripts/chart-version.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+
+repo_dir=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)
+description=$(git -C "$repo_dir" describe --tags --long --dirty)
+case "$description" in
+  *-dirty) echo 'Refusing to package a dirty tree.' >&2; exit 1 ;;
+esac
+if [[ "$description" =~ ^(.+)-([0-9]+)-g([0-9a-f]+)$ ]]; then
+  release_tag=${BASH_REMATCH[1]}
+  count=${BASH_REMATCH[2]}
+  hash=${BASH_REMATCH[3]}
+else
+  echo "Unexpected git describe result: $description" >&2
+  exit 1
+fi
+
+case "$release_tag" in
+  v[0-9]*)
+    version=${release_tag#v}
+    ;;
+  [0-9]*_[0-9]*)
+    date=${release_tag%%_*}
+    time=${release_tag#*_}
+    version="${date}.0.0-r${time}"
+    ;;
+  *)
+    echo "Unsupported application release tag: $release_tag" >&2
+    exit 1
+    ;;
+esac
+if [ "$count" -ne 0 ]; then
+  version="$version-$count-g$hash"
+fi
+printf '%s\n' "$version"