server.hostname needs to be set to (e.g.) 0.0.0.0, not localhost

[sebbASF]

When running under Docker, the server hostname needs to be defined:

jbake.org/content/download.adoc

Line 59 in 5ed8541

This command will also expose port 8820 from the container, however you will also need to set the https://jbake.org/docs/latest/#default_hostname_for_server_mode[default hostname]

However, the default setting of server.hostname=localhost does not work. The server drops the connection immediately.
I have found that using server.hostname=0.0.0.0 works.

[sebbASF]

This is noted here:
https://github.com/jbake-org/jbake/blob/5921ee529e324d71e00a96a12968021ea12dd103/README.asciidoc?plain=1#L91
but is not in the Download doc which is more likely to be read by first-time users