--- a/src/Doc/System/Misc.thy Sat Sep 17 16:50:39 2022 +0200
+++ b/src/Doc/System/Misc.thy Sat Sep 17 17:27:51 2022 +0200
@@ -38,7 +38,7 @@
\<open>Usage: isabelle build_docker [OPTIONS] APP_ARCHIVE
Options are:
- -B NAME base image (default "ubuntu")
+ -B NAME base image (default "ubuntu:22.04")
-E set Isabelle/bin/isabelle as entrypoint
-P NAME additional Ubuntu package collection ("X11", "latex")
-W DIR working directory that is accessible to docker,
@@ -70,10 +70,10 @@
\<^medskip>
Option \<^verbatim>\<open>-B\<close> specifies the Docker image taken as starting point for the
- Isabelle installation: it needs to be a suitable version of Ubuntu Linux.
- The default \<^verbatim>\<open>ubuntu\<close> refers to the latest LTS version provided by Canonical
- as the official Ubuntu vendor\<^footnote>\<open>\<^url>\<open>https://hub.docker.com/_/ubuntu\<close>\<close>. For
- Isabelle2022 this is normally Ubuntu 22.04 LTS.
+ Isabelle installation: it needs to be a suitable version of Ubuntu Linux,
+ see also \<^url>\<open>https://hub.docker.com/_/ubuntu\<close>. The default for Isabelle2022
+ is \<^verbatim>\<open>ubuntu:22.04\<close>, but other versions often work as well, after some
+ experimentation with packages.
Option \<^verbatim>\<open>-p\<close> includes additional Ubuntu packages, using the terminology
of \<^verbatim>\<open>apt-get install\<close> within the underlying Linux distribution.