# --- Build stage: builds the React frontend and the Spring Boot jar ---
FROM maven:3.9-eclipse-temurin-17 AS build
WORKDIR /build

# Cache maven deps
COPY pom.xml .
RUN mvn -q -B dependency:go-offline || true

COPY frontend ./frontend
COPY src ./src

# mvn package runs frontend-maven-plugin (npm install + build) then copies
# frontend/dist into src/main/resources/static before compiling the jar.
RUN mvn -q -B clean package -DskipTests

# --- Runtime stage: minimal JRE only ---
FROM eclipse-temurin:17-jre-alpine
WORKDIR /app

RUN addgroup -S recommendarr && adduser -S recommendarr -G recommendarr
COPY --from=build /build/target/recommendarr.jar app.jar
USER recommendarr

EXPOSE 8080

# JVM heap sized modestly for the target host; overridable via JAVA_OPTS.
ENV JAVA_OPTS="-Xms128m -Xmx512m"

ENTRYPOINT ["sh", "-c", "java $JAVA_OPTS -jar app.jar"]