docs: add kubernetes and workflow documentation

k8s/base/configmap.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: vendaweb-api-config
+data:
+  REDIS_HOST: '172.35.0.250'
+  REDIS_PORT: '6379'
+  DB_HOST: '172.35.0.250'
+  DB_PORT: '1521'
+  DB_SERVICE_NAME: 'ORCL'

k8s/base/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: vendaweb-api
+  labels:
+    app: vendaweb-api
+spec:
+  replicas: 15
+  selector:
+    matchLabels:
+      app: vendaweb-api
+  template:
+    metadata:
+      labels:
+        app: vendaweb-api
+    spec:
+      imagePullSecrets:
+        - name: harbor-secret
+      containers:
+        - name: api
+          image: 172.35.0.216/library/vendaweb-api:latest
+          imagePullPolicy: IfNotPresent
+          ports:
+            - name: http
+              containerPort: 8065
+              protocol: TCP
+          envFrom:
+            - configMapRef:
+                name: vendaweb-api-config
+            - secretRef:
+                name: vendaweb-api-secrets
+          livenessProbe:
+            httpGet:
+              path: /v1/health
+              port: http
+            initialDelaySeconds: 20
+            periodSeconds: 10
+            timeoutSeconds: 2
+            failureThreshold: 6
+          readinessProbe:
+            httpGet:
+              path: /v1/health
+              port: http
+            initialDelaySeconds: 10
+            periodSeconds: 10
+            timeoutSeconds: 2
+            failureThreshold: 6
+          startupProbe:
+            httpGet:
+              path: /v1/health
+              port: http
+            initialDelaySeconds: 5
+            periodSeconds: 5
+            timeoutSeconds: 2
+            failureThreshold: 24
+          resources:
+            requests:
+              cpu: 100m
+              memory: 256Mi
+            limits:
+              cpu: 500m
+              memory: 512Mi

k8s/base/kustomization.yaml

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+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - deployment.yaml
+  - service.yaml
+  - configmap.yaml

k8s/base/secret.yaml

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+apiVersion: v1
+kind: Secret
+metadata:
+  name: vendaweb-api-secrets
+type: Opaque
+stringData:
+  DB_USERNAME: 'simplifique'
+  DB_PASSWORD: 'simplifique'

k8s/base/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: vendaweb-api
+  labels:
+    app: vendaweb-api
+spec:
+  type: ClusterIP
+  selector:
+    app: vendaweb-api
+  ports:
+    - name: http
+      port: 8065
+      targetPort: 8065
+      protocol: TCP