FROM ubuntu:25.04 # Bake a container using sdkman to get all the needed JDKs. ARG USER_UID="1100" ARG USER_GID="1100" ARG USER_NAME="jenkins" RUN groupadd -g $USER_GID $USER_NAME && \ useradd -m -g $USER_GID -u $USER_UID $USER_NAME COPY java-init.sh /home/jenkins/java-init.sh COPY java-tools.properties /home/jenkins/java-tools.properties RUN set -eux; \ chown $USER_UID:$USER_GID /home/jenkins && \ chown -R $USER_UID:$USER_GID /home/jenkins/* && \ touch /etc/apt/apt.conf.d/99verify-peer.conf && \ echo >>/etc/apt/apt.conf.d/99verify-peer.conf "Acquire { https::Verify-Peer false }" && \ sed -i -e 's/archive.ubuntu.com/atl.mirrors.clouvider.net\/ubuntu/g' /etc/apt/sources.list && \ sed -i -e 's/security.ubuntu.com/atl.mirrors.clouvider.net\/ubuntu/g' /etc/apt/sources.list && \ sed -i -e 's/ports.ubuntu.com/ftp.tu-chemnitz.de\/pub\/linux/g' /etc/apt/sources.list && \ sed -i -e 's/http/https/g' /etc/apt/sources.list && \ apt-get update && \ apt-get -y install curl zip gnupg gnupg1 libfreetype6 fontconfig wget git && \ rm -rf /var/lib/apt/lists/* && \ rm -rf /tmp/* USER $USER_UID:$USER_GID RUN curl -s "https://get.sdkman.io" | bash RUN bash -c "cd /home/jenkins && \ chmod a+x /home/jenkins/java-init.sh && \ ./java-init.sh && \ rm -rf /home/jenkins/.sdkman/archives/* && \ rm -rf /home/jenkins/.sdkman/tmp/*" ENV MAVEN_HOME="/home/jenkins/.sdkman/candidates/maven/current" ENV JAVA_HOME="/home/jenkins/.sdkman/candidates/java/current" ENV PATH="$MAVEN_HOME/bin:$JAVA_HOME/bin:$PATH"