create branch for docker compose

Dockerfile

@@ -0,0 +1,24 @@
+# Use an official OpenJDK runtime as a parent image
+FROM openjdk
+
+# Set the working directory inside the container
+WORKDIR /app
+
+# Copy the Maven wrapper and the pom.xml file
+COPY .mvn/ .mvn
+COPY mvnw pom.xml ./
+
+# Copy the project source code
+COPY src ./src
+
+# Package the application
+RUN ./mvnw package
+
+# Copy the JAR file to the app directory
+COPY target/*.jar app.jar
+
+# Run the jar file
+CMD ["java", "-jar", "app.jar"]
+
+# Expose the port the app runs on
+EXPOSE 8080

pom.xml

@@ -139,6 +139,11 @@
       <artifactId>jakarta.xml.bind-api</artifactId>
     </dependency>
 
+    <!-- Micrometer Prometheus Registry -->
+    <dependency>
+        <groupId>io.micrometer</groupId>
+        <artifactId>micrometer-registry-prometheus</artifactId>
+    </dependency>
   </dependencies>
 
   <build>

spring-petclinic.yml

@@ -0,0 +1,27 @@
+services:
+  petclinic:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    ports:
+      - "8080:8080"
+    networks:
+      - custom-network
+
+  prometheus:
+    image: prom/prometheus:latest
+    ports:
+      - "9090:9090"
+    volumes:
+      - prometheus_data:/prometheus
+      - ./prometheus.yml:/etc/prometheus/prometheus.yml
+    networks:
+      - custom-network
+    depends_on:
+      - petclinic
+
+volumes:
+  prometheus_data:
+
+networks:
+  custom-network:

src/main/resources/application.properties

@@ -23,3 +23,9 @@ logging.level.org.springframework=INFO
 
 # Maximum time static resources should be cached
 spring.web.resources.cache.cachecontrol.max-age=12h
+
+# Configure the Prometheus endpoint
+management.endpoint.prometheus.enabled=true
+
+# Enable Prometheus metrics export
+management.metrics.export.prometheus.enabled=true