first commit

.github/workflows/deploy.yaml

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+name: CI/CD Pipeline
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Set up JDK 11
+      uses: actions/setup-java@v2
+      with:
+        java-version: '11'
+
+    - name: Build with Maven
+      run: mvn clean package
+
+    - name: Log in to Amazon ECR
+      id: login-ecr
+      uses: aws-actions/amazon-ecr-login@v1
+      with:
+        region: us-east-1
+
+    - name: Build, tag, and push Docker image
+      env:
+        ECR_REGISTRY: ${{ steps.login-ecr.outputs.registry }}
+        ECR_REPOSITORY: hello-world
+        IMAGE_TAG: ${{ github.sha }}
+      run: |
+        docker build -t $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG .
+        docker push $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG
+
+  test:
+    runs-on: ubuntu-latest
+    needs: build
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Set up JDK 11
+      uses: actions/setup-java@v2
+      with:
+        java-version: '11'
+
+    - name: Run tests with Maven
+      run: mvn test

Dockerfile

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+FROM openjdk:11-jre-slim
+COPY target/hello-world-0.0.1-SNAPSHOT.jar hello-world.jar
+ENTRYPOINT ["java", "-jar", "/hello-world.jar"]

pom.xml

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+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.example</groupId>
+    <artifactId>hello-world</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <packaging>jar</packaging>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.5.4</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+
+    <properties>
+        <java.version>11</java.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>

src/main/java/com/example/helloworld/HelloWorldApplication.java

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+package com.example.helloworld;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@SpringBootApplication
+public class HelloWorldApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(HelloWorldApplication.class, args);
+    }
+
+    @RestController
+    class HelloWorldController {
+        @GetMapping("/")
+        public String hello() {
+            return "Hello World!";
+        }
+    }
+}

src/test/java/com/example/helloworld/HelloWorldApplicationTest.java

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+package com.example.helloworld;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.http.ResponseEntity;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+public class HelloWorldApplicationTests {
+
+    @Autowired
+    private TestRestTemplate restTemplate;
+
+    @Test
+    public void contextLoads() {
+    }
+
+    @Test
+    public void testHelloWorldEndpoint() {
+        ResponseEntity<String> response = restTemplate.getForEntity("/", String.class);
+        assertThat(response.getBody()).isEqualTo("Hello World!");
+    }
+}