FROM maven:3.9.4-eclipse-temurin-11 AS builder
WORKDIR /workdir/server

# Copy only pom.xml first to leverage Docker cache
COPY pom.xml .

# Download dependencies (including parent POM)
RUN mvn dependency:go-offline

# Now copy the source code
COPY src ./src

# Package application
RUN mvn package -Dmaven.test.skip=true
RUN ls -la target/

FROM eclipse-temurin:11-jre-focal
EXPOSE 8080
VOLUME /tmp
COPY --from=builder /workdir/server/target/*.jar /app/app.jar
ENTRYPOINT ["java","-jar","/app/app.jar"]