# ========== 阶段一：Maven 构建 ==========
FROM eclipse-temurin:8-jdk-alpine AS builder

WORKDIR /build

# 先只复制 pom，利用 Docker 缓存依赖层
COPY pom.xml .
RUN mvn dependency:go-offline -B -q

# 复制源码并打包（跳过测试，加快构建）
COPY src ./src
RUN mvn clean package -DskipTests -B -q

# ========== 阶段二：运行 ==========
FROM eclipse-temurin:8-jre-alpine

WORKDIR /app

# 从构建阶段复制 jar
COPY --from=builder /build/target/sftp-manager-1.0.0.jar app.jar

# 数据与日志目录（挂载卷时会覆盖）
RUN mkdir -p /app/data /app/logs

EXPOSE 48081

ENTRYPOINT ["java", "-jar", "app.jar"]