How to configure a Jenkins plugin from a Dockerfile - github

Question

I have a user that just has access to pull from github. In my Dockerfile I have added the plugins for Jenkins, such as github:1.22.4, but I want to configure the plugins as some of the people that will build the image won't know how to do the configuration, and don't care to learn.
So, I have some plugins for Jenkins and I want to be able to configure them using the Dockerfile. How can I do that?
My Dockerfile is pretty basic right now:
FROM jenkins
COPY plugins.txt /plugins.txt
RUN /usr/local/bin/plugins.sh /plugins.txt
and I have several plugins in plugins.txt, but the one I want to configure is to pull the code from github.

Answer 1

Did you check this git repository?
lets say you have plugins.txt like:
github:1.22.4
maven-plugin:2.7.1
ant:1.3
and Dockerfile like in your question.
You can take a look into example of plugins.sh and here is part for installing plugins. since you want do configure some plugins you can add configuration when you are installing plugin:
if ! grep -q "${plugin[0]}:${plugin[1]}" "$TEMP_ALREADY_INSTALLED"
then
echo "Downloading ${plugin[0]}:${plugin[1]}"
curl --retry 3 --retry-delay 5 -sSL -f "${JENKINS_UC_DOWNLOAD}/plugins/${plugin[0]}/${plugin[1]}/${plugin[0]}.hpi" -o "$REF/${plugin[0]}.jpi"
unzip -qqt "$REF/${plugin[0]}.jpi"
# if [ some plugin ] then
# here your configuration
# fi
(( COUNT_PLUGINS_INSTALLED += 1 ))
else
echo " ... skipping already installed: ${plugin[0]}:${plugin[1]}"
fi