the dockerfile used -
FROM azul/zulu-openjdk-alpine:11 as jdk
RUN jlink \
--module-path /usr/lib/jvm/*/jmods/ \
--verbose \
--add-modules java.base,jdk.unsupported,java.sql,java.desktop \
--compress 2 \
--no-header-files \
--no-man-pages \
--output /opt/jdk-11-minimal
FROM alpine:3.10
ENV JAVA_HOME=/opt/jdk-11-minimal
ENV PATH=$PATH:/opt/jdk-11-minimal/bin
COPY --from=jdk /opt/jdk-11-minimal /opt/jdk-11-minimal
why jlink can't be found in azul/zulu-openjdk-alpine:11?
The simple answer is jlink is not on the PATH so can't be found.
If you change the RUN line to
RUN /usr/lib/jvm/zulu11/bin/jlink
then it can be found.
However, you still have an error using the wildcard in the module path. Change this to
--module-path /usr/lib/jvm/zulu11/jmods/
and the docker command will complete successfully.