First we will add docker repository for Fedora 23 for that inside directory
add "docker.repo" file in which add following content.I use nano a simple command line text editor for it through root privileges.most of tutorial assumes root previlages on bash shell.
“docker.repo” file should look like
now we will update repository as follows
lets install docker on our fedora machine
dnf install docker-engine
let’s enable docker service as follows
systemctl enable docker.service
need to start docker service as follows
systemctl start docker
we can check status of docker service is running or not using below command
systemctl status docker
Now we will install ubuntu image
docker pull ubuntu
once we pulled ubuntu image we can run it
docker run -it ubuntu
docker run -it ubuntu:latest /bin/bash
every time we run a image it creates new container we can see list of container using following command
docker ps -a
by the way to see list of pulled images we can use following command
once we have command prompt of container we can install some package that are useful in our quest
apt-get install nano
this will install nano command line text editor while below command will install subset of networking related tools that are suitable for docker container image
apt-get install -y inetutils-ping
we can check ip address of ubuntu server from fedora command prompt as follows
docker inspect e350390fd549
output of above command will be json string in which find a key "IPAddress" which will give us ip address of Ubuntu server running in docker,here ‘e350390fd549’ is container id that we can get by issuing docker ps -a or simply by looking at command prompt of ubuntu machine.
Adding new users
add user sangram to sudo group
usermod -aG sudo sangram
Install ssh server as follows
apt-get install openssh-server
modify setting of ssh demeon as follows.
Open config file
modify it to allow root login,X11 Forwarding,enable password authentication ,change port from default value to suitable value.check if DSA & RSA & Public key authentication is enabled or disabled check where it will look for password.There may be text similar to below
change flags suitably.
create public ,private keys using either rsa & dsa
ssh-keygen -t rsa
it will create two files under .ssh dir in you home directory of current user (root),in same location create a file
and add content of public key to it.Now copy the private key to you Fedora machine convert it to suitable format using puttygen command
puttygen id_dsa -O private-openssh -o my-openssh-key
restart ssh serverusing below command replace restart by start if not running.
now from fedora machine try to run putty and provide private key in ssh auth change IP address to Ubuntu server ip address also check port is same as one in which ssh server is running.
From command prompt you can check it as follows
ssh -p 2221 firstname.lastname@example.org
where 2221 is ssh port & 126.96.36.199 is ip address of you ubuntu server.
Lets install virtual framebuffer & lightweight window manager (jwm) & vnc server as follows
apt-get install xvfb
apt-get install x11vnc
jwm is very small window manager for X server.we are using xdm instead of gdm or kdm,xdm is default for X server.
apt-get install jwm
apt-get install xterm
apt-get --reinstall install xfonts-base
to assign password to vnc login issue following command
it will ask for password & confirmation do not change location where password will be stored default location will be /etc/x11vnc.pass
we need to define display settings as follows
Xvfb -screen 0 800x600x16 -ac &
now we will launch window manger JWM as follows
DISPLAY=:0 jwm &
to view our Window manager lets start vnc server as follows
x11vnc -rfbauth /etc/x11vnc.pass -display :0
now from fedora machine launch VNC viewer say tiger VNC viewer in that put ip address of our Ubuntu server it will ask for vnc password provide one you will see JWM running.
you can save changes made in running container to same image or new image so that you can latter work further on this as follows
docker commit e350390fd549 nameofconatainer
wish you best of luck.In case i miss some step in between(as this is done over weekends) please correct me.