FROM maven:3.9-eclipse-temurin-21 AS build
WORKDIR /app

# Separate layer for dependencies: only re-runs when pom.xml changes.
# The cache mount keeps ~/.m2 across builds so even pom.xml changes
# don't require a full re-download.
COPY pom.xml .
RUN --mount=type=cache,target=/root/.m2 \
    mvn dependency:go-offline -B -q

COPY src ./src
RUN --mount=type=cache,target=/root/.m2 \
    mvn package -DskipTests -B

FROM eclipse-temurin:21-jre
WORKDIR /deployments
COPY --from=build /app/target/quarkus-app/lib/ ./lib/
COPY --from=build /app/target/quarkus-app/*.jar ./
COPY --from=build /app/target/quarkus-app/app/ ./app/
COPY --from=build /app/target/quarkus-app/quarkus/ ./quarkus/

EXPOSE 8080

ENTRYPOINT ["java", "-jar", "/deployments/quarkus-run.jar"]