add docker files

.env

@@ -0,0 +1,3 @@
+DB_USERNAME=petclinic
+DB_PASSWORD=petclinic
+DB_ROOT_PASSWORD=root_petclinic

Dockerfile

@@ -0,0 +1,7 @@
+FROM eclipse-temurin:21-jdk-jammy
+
+WORKDIR /app
+
+COPY target/spring-petclinic-*.jar /app/spring-petclinic.jar
+
+CMD ["java", "-jar", "spring-petclinic.jar"]

Dockerfile.multi

@@ -0,0 +1,12 @@
+FROM eclipse-temurin:21-jdk-jammy as build
+WORKDIR /app
+COPY .mvn/ .mvn
+COPY mvnw pom.xml ./
+RUN ./mvnw dependency:resolve
+COPY src ./src
+RUN ./mvnw package
+
+FROM eclipse-temurin:21-jre-alpine
+COPY --from=build /app/target/spring-petclinic-*.jar /spring-petclinic.jar
+EXPOSE 8080
+CMD ["java", "-jar", "spring-petclinic.jar"]

docker-compose.yml

@@ -1,21 +1,27 @@
+version: "3"
+
 services:
-  mysql:
-    image: mysql:9.1
+  petclinic:
+    build:
+      context: .
+      dockerfile: Dockerfile.multi
     ports:
-      - "3306:3306"
+      - 8080:8080
+    environment:
+      - MYSQL_URL=jdbc:mysql://mysqlserver/petclinic
+      - SERVER_PORT=8080
+    depends_on:
+      - mysqlserver
+  mysqlserver:
+    image: mysql:8.0
+    ports:
+      - 3306:3306
     environment:
-      - MYSQL_ROOT_PASSWORD=
-      - MYSQL_ALLOW_EMPTY_PASSWORD=true
-      - MYSQL_USER=petclinic
-      - MYSQL_PASSWORD=petclinic
       - MYSQL_DATABASE=petclinic
+      - MYSQL_USER=${DB_USERNAME}
+      - MYSQL_PASSWORD=${DB_PASSWORD}
+      - MYSQL_ROOT_PASSWORD=${DB_ROOT_PASSWORD}
     volumes:
-      - "./conf.d:/etc/mysql/conf.d:ro"
-  postgres:
-    image: postgres:17.0
-    ports:
-      - "5432:5432"
-    environment:
-      - POSTGRES_PASSWORD=petclinic
-      - POSTGRES_USER=petclinic
-      - POSTGRES_DB=petclinic
+      - mysql_data:/var/lib/mysql
+volumes:
+  mysql_data: