Not support for multi-stage build

[ripper2hl]

The mulit stage build is not supported for current image, for example when you have the next Dockerfile works fine

FROM maven:alpine AS build
ADD src /usr/src/app/src
ADD pom.xml /usr/src/app/
RUN mvn -f /usr/src/app/pom.xml clean package -Dmaven.test.skip=true
RUN ls -la /usr/src/app/target/

FROM openjdk:alpine
COPY --from=build /usr/src/app/target/app.jar ./app.jar
EXPOSE 8080

But when i use the spring-boot-docker-base image this doesn't work

FROM maven:alpine AS build
ADD src /usr/src/app/src
ADD pom.xml /usr/src/app/
RUN mvn -f /usr/src/app/pom.xml clean package -Dmaven.test.skip=true
RUN ls -la /usr/src/app/target/

FROM etiennek/spring-boot
COPY --from=build /usr/src/app/target/app.jar ./app.jar
EXPOSE 8080

This is the output:

$ docker build . -t sepomex
Sending build context to Docker daemon  23.05MB
Step 1/7 : FROM maven:alpine AS build
 ---> 7445f83cd169
Step 2/7 : ADD src /usr/src/app/src
 ---> Using cache
 ---> 16084bce6aba
Step 3/7 : ADD pom.xml /usr/src/app/
 ---> Using cache
 ---> 78ba6ac64513
Step 4/7 : RUN mvn -f /usr/src/app/pom.xml clean package -Dmaven.test.skip=true
 ---> Using cache
 ---> 6fb46a02162f
Step 5/7 : FROM etiennek/spring-boot
# Executing 5 build triggers
 ---> Using cache
 ---> Using cache
COPY failed: stat /var/lib/docker/tmp/docker-builder953042355/app.jar: no such file or directory
perales at MacBook-Pro-de-Israel-Perales in ~/Documents/Documentos/git/sepomex on master*

https://aboullaite.me/multi-stage-docker-java/

[ripper2hl]

I was can resolve this problem creating a app.jar (an empty file) with command touch, i commit this file in my github repo and after this the build works fine

FROM maven:alpine AS build
ADD src /usr/src/app/src
ADD pom.xml /usr/src/app/
RUN mvn -f /usr/src/app/pom.xml clean package -Dmaven.test.skip=true

FROM etiennek/spring-boot
COPY --from=build /usr/src/app/target/app.jar /
EXPOSE 8080

This is the repo url

https://github.com/ripper2hl/sepomex