Hi,
i am not able to build openfire with the dockerfile from the git repo. Docker ist not able to find the folder /usr/src/target/release/openfire from line COPY --from=0 /usr/src/target/release/openfire /usr/local/openfire.
I think this problem was introduced while switching from ant to maven.
I created a pull request with a fix: https://github.com/igniterealtime/Openfire/pull/1067
Best Regards