[add] Docker task

Dockerfile

@@ -0,0 +1,13 @@
+FROM gradle:8.12-jdk17-focal AS build
+
+RUN mkdir /project
+COPY . /project
+WORKDIR /project
+RUN gradle clean build
+
+FROM eclipse-temurin:17.0.14_7-jre-ubi9-minimal
+
+RUN mkdir /app
+COPY --from=build /project/build/libs/spring-petclinic-0.1.3-SNAPSHOT.jar /app/java-application.jar
+WORKDIR /app
+CMD [ "java", "-jar", "java-application.jar"]

my-docker-compose.yml

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+services:
+
+  petclinic:
+    image: multi-petclinic
+    ports:
+      - 8080:8080
+
+  postgres:
+    image: postgres:17.0
+    ports:
+      - "5432:5432"
+    environment:
+      - POSTGRES_PASSWORD=petclinic
+      - POSTGRES_USER=petclinic
+      - POSTGRES_DB=petclinic