jenkins.sh

#! /bin/bash -e

: "${JENKINS_WAR:="/usr/share/jenkins/jenkins.war"}"
: "${JENKINS_HOME:="/var/jenkins_home"}"

touch "${COPY_REFERENCE_FILE_LOG}" || { echo "Can not write to ${COPY_REFERENCE_FILE_LOG}. Wrong volume permissions?"; exit 1; }

echo "--- Download pre-defined configs ---"
curl http://${TASK_HOST}/jenkins/config/detail/config -o  /var/jenkins_home/config.xml
curl http://${TASK_HOST}/jenkins/config/detail/credentials -o  /var/jenkins_home/credentials.xml

echo "--- Download pre-defined task ---"
ls /usr/share/jenkins/ref
mkdir /usr/share/jenkins/ref/dsl
curl http://${TASK_HOST}/task/list  | sed  -e 's/"\]//g' -e 's/\["//g' |  awk -F '","' 'BEGIN {a=""} {for (b=1;b<=NF;b++) print $b}'|  xargs -I  {}  bash -c "curl http://${TASK_HOST}/task/{}/detail -o  /usr/share/jenkins/ref/dsl/{}.groovy"

echo "--- Copying files at $(date)" >> "$COPY_REFERENCE_FILE_LOG"
find /usr/share/jenkins/ref/ \( -type f -o -type l \) -exec bash -c '. /usr/local/bin/jenkins-support; for arg; do copy_reference_file "$arg"; done' _ {} +

# if `docker run` first argument start with `--` the user is passing jenkins launcher arguments
if [[ $# -lt 1 ]] || [[ "$1" == "--"* ]]; then

  # read JAVA_OPTS and JENKINS_OPTS into arrays to avoid need for eval (and associated vulnerabilities)
  java_opts_array=()
  while IFS= read -r -d '' item; do
    java_opts_array+=( "$item" )
  done < <([[ $JAVA_OPTS ]] && xargs printf '%s\0' <<<"$JAVA_OPTS")

  if [[ "$DEBUG" ]] ; then
    java_opts_array+=( \
      '-Xdebug' \
      '-Xrunjdwp:server=y,transport=dt_socket,address=5005,suspend=y' \
    )
  fi

  jenkins_opts_array=( )
  while IFS= read -r -d '' item; do
    jenkins_opts_array+=( "$item" )
  done < <([[ $JENKINS_OPTS ]] && xargs printf '%s\0' <<<"$JENKINS_OPTS")

  exec java -Duser.home="$JENKINS_HOME" "${java_opts_array[@]}" -jar ${JENKINS_WAR} "${jenkins_opts_array[@]}" "$@"
fi

# As argument is not jenkins, assume user want to run his own process, for example a `bash` shell to explore this image
exec "$@"