# --- Stage 1: Build ---
FROM maven:3.9.0-eclipse-temurin-8 as mvn
WORKDIR /app

# 1. 复制 settings.xml
COPY settings.xml /root/.m2/settings.xml

# 2. 只复制 pom.xml 文件
COPY pom.xml .

# 3. 仅下载依赖。只要 pom.xml 不变，这一层就会被缓存
RUN mvn dependency:go-offline

# 4. 复制所有项目文件
COPY . .

# 5. 执行打包（此时不会再下载依赖，速度很快）
RUN mvn clean package -DskipTests

# --- Stage 2: Runtime ---
FROM openjdk:8-jre-slim
WORKDIR /app

COPY --from=mvn /app/target/dalian-nft-api.jar app.jar

EXPOSE 8888

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