我想创建一个FROM jenkins/jenkins:lts
USER root
# install plugins
COPY plugins.txt /usr/share/jenkins/ref/plugins.txt
RUN /usr/local/bin/install-plugins.sh < /usr/share/jenkins/ref/plugins.txt
# Configuration as code plugin
# The configuration file must be stored outside of the Jenkins home directory
# because this is mounted as a volume - consequently, changes to the file in
# the image would not make it into the container which would override it with
# the previous version from the volume.
ENV CASC_JENKINS_CONFIG=/run/jenkins.yaml
COPY --chown=jenkins:jenkins jenkins.yaml /run/jenkins.yaml
# don't run plugin and admin user setup wizard at first run
ENV JAVA_OPTS="-Djenkins.install.runSetupWizard=false"
USER jenkins
（源自CustomTabItem以便能够添加属性），当用户从工具箱中将其拖入时，它会带有默认内容。
TabItem（在第二步中，我也想用<TabControl>
<CustomTabItem>
<!-- predefined content goes here -->
</CustomTabItem>
</TabControl>
重复同样的事情，添加TabControl，它会自动包含例如三个CustomTabControl s）
我注意到默认情况下已经为CustomTabItem添加了TabItem；这也适用于Grid。请记住，这在设计时应该像正常的CustomTabItem一样起作用，我如何才能将其更改为包含TabItem呢？