docker-multi-stage-build.sh

docker-multi-stage-build.sh

set -ex
cat <<EOF > Dockerfile
FROM debian:buster-slim as dependency
WORKDIR /app
COPY test.sh .
RUN ./test.sh

FROM debian:buster-slim as target-0
WORKDIR /app
COPY --from=dependency /app/* /app/
RUN echo 'target-0' > /app/env
CMD ["cat", "/app/env"]

FROM debian:buster-slim as target-1
WORKDIR /app
COPY --from=dependency /app/* /app/
RUN echo 'target-1' > /app/env
CMD ["cat", "/app/env"]
EOF

docker build -t test-0:latest --target target-0 .
docker build -t test-1:latest --target target-1 .