Add melange/apko build pipeline and Kubernetes manifests

- Add melange.yaml for distroless package build
- Add apko.yaml for minimal container image
- Add GitHub Actions workflow for melange/apko CI build
- Add Kubernetes manifests (deployment, service, configmap, secret, redis)
- Update Dockerfile, .gitignore, and docker-compose.yml

k8s/configmap.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: apcupsd-client-config
+  namespace: apcupsd
+  labels:
+    app.kubernetes.io/name: apcupsd-client
+    app.kubernetes.io/part-of: apcupsd-client
+data:
+  REDIS_URL: "redis://redis:6379/0"
+  LOG_LEVEL: "info"
+  TZ: "UTC"
+  ALLOW_PRIVATE_IPS: "true"
+  TRUST_PROXY: "true"
+  RATE_LIMIT_ENABLED: "true"
+  ADMIN_USERNAME: "admin"
+  SESSION_MAX_AGE_SECONDS: "86400"

k8s/deployment.yaml

@@ -0,0 +1,71 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: apcupsd-client
+  namespace: apcupsd
+  labels:
+    app.kubernetes.io/name: apcupsd-client
+    app.kubernetes.io/part-of: apcupsd-client
+spec:
+  replicas: 1
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxUnavailable: 0
+      maxSurge: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: apcupsd-client
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: apcupsd-client
+    spec:
+      securityContext:
+        runAsUser: 10001
+        runAsGroup: 10001
+        runAsNonRoot: true
+        fsGroup: 10001
+      containers:
+        - name: web
+          image: ghcr.io/k2patel/apcupsd-client:latest
+          ports:
+            - containerPort: 8000
+              protocol: TCP
+          envFrom:
+            - configMapRef:
+                name: apcupsd-client-config
+            - secretRef:
+                name: apcupsd-client-secret
+          livenessProbe:
+            httpGet:
+              path: /healthz
+              port: 8000
+            initialDelaySeconds: 15
+            periodSeconds: 30
+            timeoutSeconds: 5
+            failureThreshold: 3
+          readinessProbe:
+            httpGet:
+              path: /readyz
+              port: 8000
+            initialDelaySeconds: 5
+            periodSeconds: 10
+            timeoutSeconds: 5
+            failureThreshold: 3
+          resources:
+            requests:
+              memory: "128Mi"
+              cpu: "100m"
+            limits:
+              memory: "256Mi"
+              cpu: "500m"
+          securityContext:
+            readOnlyRootFilesystem: true
+            allowPrivilegeEscalation: false
+          volumeMounts:
+            - name: tmp
+              mountPath: /tmp
+      volumes:
+        - name: tmp
+          emptyDir: {}

k8s/kustomization.yaml

@@ -0,0 +1,11 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - namespace.yaml
+  - configmap.yaml
+  - secret.yaml
+  - redis-statefulset.yaml
+  - redis-service.yaml
+  - deployment.yaml
+  - service.yaml

k8s/namespace.yaml

@@ -0,0 +1,6 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: apcupsd
+  labels:
+    app.kubernetes.io/part-of: apcupsd-client

k8s/redis-service.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: redis
+  namespace: apcupsd
+  labels:
+    app.kubernetes.io/name: redis
+    app.kubernetes.io/part-of: apcupsd-client
+spec:
+  type: ClusterIP
+  selector:
+    app.kubernetes.io/name: redis
+  ports:
+    - name: redis
+      protocol: TCP
+      port: 6379
+      targetPort: 6379

k8s/redis-statefulset.yaml

@@ -0,0 +1,72 @@
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: redis
+  namespace: apcupsd
+  labels:
+    app.kubernetes.io/name: redis
+    app.kubernetes.io/part-of: apcupsd-client
+spec:
+  serviceName: redis
+  replicas: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: redis
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: redis
+    spec:
+      securityContext:
+        runAsUser: 999
+        runAsGroup: 999
+        fsGroup: 999
+      containers:
+        - name: redis
+          image: redis:7-alpine
+          command:
+            - redis-server
+            - --appendonly
+            - "yes"
+            - --appendfsync
+            - everysec
+          ports:
+            - containerPort: 6379
+              protocol: TCP
+          livenessProbe:
+            exec:
+              command:
+                - redis-cli
+                - ping
+            initialDelaySeconds: 10
+            periodSeconds: 10
+            timeoutSeconds: 3
+            failureThreshold: 5
+          readinessProbe:
+            exec:
+              command:
+                - redis-cli
+                - ping
+            initialDelaySeconds: 5
+            periodSeconds: 5
+            timeoutSeconds: 3
+            failureThreshold: 3
+          resources:
+            requests:
+              memory: "64Mi"
+              cpu: "50m"
+            limits:
+              memory: "128Mi"
+              cpu: "250m"
+          volumeMounts:
+            - name: redis-data
+              mountPath: /data
+  volumeClaimTemplates:
+    - metadata:
+        name: redis-data
+      spec:
+        accessModes:
+          - ReadWriteOnce
+        resources:
+          requests:
+            storage: 1Gi

k8s/secret.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: apcupsd-client-secret
+  namespace: apcupsd
+  labels:
+    app.kubernetes.io/name: apcupsd-client
+    app.kubernetes.io/part-of: apcupsd-client
+type: Opaque
+stringData:
+  SESSION_SECRET: "CHANGE_ME_TO_A_RANDOM_SECRET"
+  # Optional — uncomment and set as needed:
+  # SMTP_PASSWORD: ""
+  # ADMIN_PASSWORD_HASH: ""

k8s/service.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: apcupsd-client
+  namespace: apcupsd
+  labels:
+    app.kubernetes.io/name: apcupsd-client
+    app.kubernetes.io/part-of: apcupsd-client
+spec:
+  type: LoadBalancer
+  selector:
+    app.kubernetes.io/name: apcupsd-client
+  ports:
+    - name: http
+      protocol: TCP
+      port: 10280
+      targetPort: 8000