Tutorial 28 - Selenium 4 Grid With Docker: Install Docker on Ubuntu (Linux)
What you will Learn:
Step#1: Set the environment for docker installation on Ubuntu
Step#2: Add Docker's official GPG key
Step#3: Set up the stable repository
Step#4: Install docker on Ubuntu
Step#5: Check if docker service is running
Stop/Start docker service
docker version, docker --version, docker info commands
Step#1: Set the environment for docker installation on Ubuntu
Switch user as root, enter root password to login
Execute apt-get update command to update the repository list of virtual machine
Note down the ip address of VM
To easily copy/paste remaining commands, let us ssh the above ip address of the VM from our windows machine. Enter superuser password to login
Switch user as root, enter root password to login
Go to official docker site https://docs.docker.com/engine/install/ubuntu/
Copy the below command
Before we execute this command, let us quickly understand few terms used in this command:
So let us now paste the above command and execute. You might get below error
To resolve this error, enter ‘software & updates’ in the search field as shown below
Click ‘Software & Updates’ icon that you see above.
The below comes up.
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Enter ‘Never’ and ‘Display immediately’ against the fields as seen below
Enter password (if prompted).
Power off the Virtual machine as shown below
Start Virtual machine as shown below
Once the machine is up, exit from ssh session.
Ssh again and switch as root user.
Execute same command again as shown below. We might get another error as seen below
Copy the command mentioned in the error message and execute:
dpkg --configure -a
Execute the same command again
apt-get install \
apt-transport-https \
ca-certificates \
curl \
gnupg \
lsb-release
This time it should be success as shown below
So we are done with step 1 of setting up repository.
Step#2: Add Docker's official GPG key
Let us now move to step 2
Copy above command (this command is texted below for ready reference):
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
Before we execute this command, let us quickly understand few terms used in this command:
Let us now paste the command and execute as shown below. You should not see any error
Step#3: Set up the stable repository
Let us now copy the step 3 command:
echo \
"deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
Paste and execute, you should not see any errors
We are done with repository setup and we have set the environment for docker installation.
Step#4: Install docker on Ubuntu
Let us now install docker engine.
Copy the above command and execute
Next copy:
apt-get install docker-ce docker-ce-cli containerd.io
Paste and execute
That’s it. We have completed the docker installation on Ubuntu!
Check if docker service is running
Execute service docker status command, notice below that the service is active
Stop docker service
We can stop docker service by executing ‘service docker stop’
Notice below that service is inactive now
Start docker service
We can start docker service by executing ‘service docker start’
Notice below that service is active now
docker version
This command shows the docker server and client details. See below, the docker version is 20.10.9
docker --version
docker --version command shows only the version info
docker info
This command lists out the detailed info w.r.t docker. Notice the number of containers and images right now
So this is how we setup docker on Ubuntu linux OS.
Thank you for reading!!!
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