Docker构建在我的本地成功,但在连接到我的Github帐户的docker集线器上自动构建失败。你能建议我哪里错了吗?
Dockerfile
FROM openjdk:8-jdk-alpine
RUN addgroup -S spring && adduser -S spring -G spring
USER spring:spring
ARG JAR_FILE=target/*.jar
COPY ${JAR_FILE} app.jar
ENTRYPOINT ["java","-jar","/app.jar"]我在DockerHub上的构建配置

下面是构建错误
Step 5/6 : COPY ${JAR_FILE} app.jar
COPY failed: no source files were specified发布于 2020-04-24 18:26:01
我们需要多阶段建设这里。下面我的DockerFile的引用
#
# Build stage
#
FROM maven:3.6.0-jdk-11-slim AS build
COPY src /home/app/src
COPY pom.xml /home/app
RUN mvn -f /home/app/pom.xml clean package
#
# Package stage
#
FROM openjdk:11-jre-slim
COPY --from=build /home/app/target/*.jar /usr/local/lib/app.jar
EXPOSE 8080
ENTRYPOINT ["java","-jar","/usr/local/lib/app.jar"]https://stackoverflow.com/questions/61360642
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