Added resources for the CICD setup

.github/workflows/build.yml

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+name: Build and Deploy
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up JDK 17
+      uses: actions/setup-java@v3
+      with:
+        java-version: '17'
+        distribution: 'temurin'
+        cache: maven
+    
+    - name: Build with Maven
+      run: ./mvnw package -B
+    
+    - name: Build Docker Image
+      run: docker build -t petclinic:${{ github.sha }} .
+
+    - name: Test
+      run: ./mvnw test

Dockerfile

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+FROM eclipse-temurin:17-jdk-jammy as builder
+WORKDIR /app
+COPY .mvn/ .mvn
+COPY mvnw pom.xml ./
+RUN ./mvnw dependency:go-offline
+COPY src ./src
+RUN ./mvnw package -DskipTests
+
+FROM eclipse-temurin:17-jre-jammy
+WORKDIR /app
+COPY --from=builder /app/target/*.jar app.jar
+EXPOSE 8080
+ENTRYPOINT ["java", "-jar", "app.jar"]

k8s/base/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: petclinic
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: petclinic
+  template:
+    metadata:
+      labels:
+        app: petclinic
+    spec:
+      containers:
+      - name: petclinic
+        image: petclinic:latest
+        ports:
+        - containerPort: 8080
+        resources:
+          requests:
+            memory: "512Mi"
+            cpu: "250m"
+          limits:
+            memory: "1Gi"
+            cpu: "500m"
+        readinessProbe:
+          httpGet:
+            path: /actuator/health
+            port: 8080
+          initialDelaySeconds: 30
+          periodSeconds: 10
+      - name: petclinic
+        image: petclinic:latest
+        imagePullPolicy: IfNotPresent

k8s/base/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: petclinic
+spec:
+  type: ClusterIP
+  ports:
+  - port: 80
+    targetPort: 8080
+  selector:
+    app: petclinic