Docker image build failures

[randomorder]

Docker image builds are failing. I tracked the problem to a change in the parent Tomcat image "9-jdk11-temurin"

The docker image with that tag has beed re-pushed with an update to the Ubuntu ditro version from 22.04 to 24.04 and we now have an ID conflict with the tomcat user creation in the Dockerfile:

#34 [stage-1 12/16] RUN groupadd -g 1000 tomcat
#34 0.341 groupadd: GID '1000' already exists
#34 ERROR: process "/bin/sh -c groupadd -g $GID $UNAME" did not complete successfully: exit code: 4
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 > [stage-1 12/16] RUN groupadd -g 1000 tomcat:
0.341 groupadd: GID '1000' already exists
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Dockerfile:140
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 138 |     COPY entrypoint.sh /entrypoint.sh
 139 |     COPY ${CUSTOM_FONTS} $GEOSERVER_DATA_DIR/styles/
 140 | >>> RUN groupadd -g $GID $UNAME
 141 |     RUN useradd -m -u $UID -g $GID --system $UNAME
 142 |     RUN chown -R $UID:$GID $GEOSERVER_LOG_DIR $CATALINA_BASE $GEOWEBCACHE_CACHE_DIR $GEOWEBCACHE_CONFIG_DIR $NETCDF_DATA_DIR $GRIB_CACHE_DIR $GEOSERVER_DATA_DIR
--------------------
ERROR: failed to solve: process "/bin/sh -c groupadd -g $GID $UNAME" did not complete successfully: exit code: 4

[randomorder]

#159 should fix the builds by forcing the Ubuntu "Jammy" variant of the Tomcat base image. For the long term we'll need a change in the Dockerfile that allow us to build the images based on Ubuntu Noble 24.04