added some dockers for building jenkins agents

docker-jenkins/build-initial.sh

@@ -0,0 +1,8 @@
+cd /tmp
+
+apt-get update &&
+DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
+	openssh-server openssh-client openjdk-11-jdk openjdk-11-jre \
+	gcc make autoconf automake libtool  vim &&
+useradd -m -s /bin/bash jenkins &&
+mkdir -p /var/run/sshd