First commit of Dockerfile for jenkins-syscont image. (#14)

* First commit of Dockerfile for jenkins-syscont image.

Author: ctalledo

dockerfiles/jenkins-syscont/Dockerfile

@@ -0,0 +1,40 @@
+#
+# System Container with Jenkins Master + Dockerd
+#
+# Run with: docker run --rm -d --runtime=sysbox-runc -P nestybox/jenkins-syscont
+
+FROM jenkins/jenkins:lts
+USER root
+
+#
+# Docker install
+#
+RUN apt-get update && apt-get install --no-install-recommends -y \
+       apt-transport-https \
+       ca-certificates \
+       curl \
+       gnupg2 \
+       software-properties-common
+RUN curl -fsSL https://download.docker.com/linux/debian/gpg | apt-key add -
+RUN apt-key fingerprint 0EBFCD88
+RUN add-apt-repository \
+       "deb [arch=amd64] https://download.docker.com/linux/debian \
+       $(lsb_release -cs) \
+       stable"
+RUN apt-get update && apt-get install --no-install-recommends -y \
+       docker-ce docker-ce-cli containerd.io
+
+#
+# supervisord
+#
+RUN apt-get install --no-install-recommends -y supervisor
+RUN mkdir -p /var/log/supervisor
+COPY supervisord.conf /etc/supervisor/conf.d/supervisord.conf
+
+#
+# Entrypoint
+#
+COPY docker-entrypoint.sh /usr/bin/docker-entrypoint.sh
+RUN chmod +x /usr/bin/docker-entrypoint.sh
+
+ENTRYPOINT ["/usr/bin/docker-entrypoint.sh"]

dockerfiles/jenkins-syscont/docker-entrypoint.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+set -e
+
+# sys container init:
+#
+# If no command is passed to the container, supervisord becomes init and
+# starts all its configured programs (per /etc/supervisor/conf.f/supervisord.conf).
+#
+# If a command is passed to the container, it runs in the foreground;
+# supervisord runs in the background and starts all its configured
+# programs.
+#
+# In either case, supervisord always starts its configured programs.
+
+if [ "$#" -eq 0 ] || [ "${1#-}" != "$1" ]; then
+  exec supervisord -n "$@"
+else
+  supervisord -c /etc/supervisor/conf.d/supervisord.conf &
+  exec "$@"
+fi

dockerfiles/jenkins-syscont/supervisord.conf

@@ -0,0 +1,18 @@
+[supervisord]
+stdout_logfile=/dev/stdout
+stdout_logfile_maxbytes=0
+
+[program:dockerd]
+command=/usr/bin/dockerd
+priority=1
+autostart=true
+autorestart=true
+startsecs=0
+
+[program:jenkins]
+command=/usr/local/bin/jenkins.sh
+priority=2
+autostart=true
+autorestart=true
+startsecs=0
+username=jenkins