FROM
sections in Dockerfile
--target
FROM openjdk:8-jdk AS builder
#...
FROM openjdk:8-jre
COPY --from=builder ...
#...
–
Multi-stage with legacy build system:
docker build --tag hello-world-java:multi .
Multi-stage with buildkit:
DOCKER_BUILDKIT=1 docker build --tag hello-world-java:multi .