Cambios en Dockerfile y docker-compose

Dockerfile

@@ -1,9 +1,24 @@
+# ─── ETAPA 1: BUILD ───────────────────────────────────────────────────────────
+FROM maven:3-eclipse-temurin-25 AS builder
+
+WORKDIR /app
+
+# Copia el pom primero para aprovechar cache de dependencias
+COPY pom.xml .
+RUN mvn dependency:go-offline -q
+
+# Copia el código fuente y compila (sin tests)
+COPY src ./src
+RUN mvn package -DskipTests -q
+
+# ─── ETAPA 2: RUNTIME ─────────────────────────────────────────────────────────
 FROM eclipse-temurin:25-jdk
 
 WORKDIR /app
 
-COPY target/*.jar app.jar
+# Solo copia el .jar generado — Maven y el código fuente NO están aquí
+COPY --from=builder /app/target/*.jar app.jar
 
 EXPOSE 8080
 
-ENTRYPOINT ["java","-jar","/app/app.jar"]
+ENTRYPOINT ["java", "-jar", "app.jar"]

docker-compose_prod.yml

@@ -9,6 +9,13 @@ services:
       MYSQL_ALLOW_EMPTY_PASSWORD: ${MYSQL_ALLOW_EMPTY_PASSWORD}
     ports:
       - "3306:3306"
+    volumes:
+      - mysql_data:/var/lib/mysql
+    healthcheck:
+      test: ["CMD", "mysqladmin", "ping", "-h", "localhost"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
     restart: unless-stopped
 
   backend:
@@ -17,11 +24,15 @@ services:
       dockerfile: Dockerfile
     container_name: spring_admision
     depends_on:
-      - mysql
+      mysql:
+        condition: service_healthy
     ports:
       - "8080:8080"
     environment:
       SPRING_DATASOURCE_URL: jdbc:mysql://mysql:3306/${MYSQL_DATABASE}?useSSL=false&serverTimezone=UTC
       SPRING_DATASOURCE_USERNAME: root
       SPRING_DATASOURCE_PASSWORD: ""
-    restart: unless-stopped
+    restart: unless-stopped
+
+volumes:
+  mysql_data: