apiVersion: apps/v1
kind: Deployment
metadata:
  name: math-exercises-app
  labels:
    app: math-exercises
spec:
  replicas: 2
  selector:
    matchLabels:
      app: math-exercises
  template:
    metadata:
      labels:
        app: math-exercises
    spec:
      # Security context for the pod
      securityContext:
        runAsNonRoot: true
        runAsUser: 1000
        fsGroup: 2000
        seccompProfile:
          type: RuntimeDefault
      containers:
      - name: math-exercises
        image: math-exercises:latest
        ports:
        - containerPort: 8000
        # Security context for the container
        securityContext:
          allowPrivilegeEscalation: false
          readOnlyRootFilesystem: true
          runAsNonRoot: true
          runAsUser: 1000
          capabilities:
            drop:
              - ALL
        # Resource limits and requests
        resources:
          requests:
            memory: "64Mi"
            cpu: "250m"
          limits:
            memory: "128Mi"
            cpu: "500m"
        # Liveness probe
        livenessProbe:
          httpGet:
            path: /health
            port: 8000
          initialDelaySeconds: 90
          periodSeconds: 10
          timeoutSeconds: 5
          failureThreshold: 3
        # Readiness probe
        readinessProbe:
          httpGet:
            path: /health
            port: 8000
          initialDelaySeconds: 2
          periodSeconds: 3
          timeoutSeconds: 3
          failureThreshold: 3
        # Environment variables from ConfigMap
        envFrom:
        - configMapRef:
            name: math-exercises-config
        # Volume mount for temporary files
        volumeMounts:
        - name: tmp-volume
          mountPath: /tmp
      volumes:
      - name: tmp-volume
        emptyDir: {}