Following the steps below will let you realize that installing docker on Ubuntu 19.04 is not that hard as it seems, so let’s see how you can do it.
Prerequisites
- Ubuntu 19.04
Install Docker
As a first step you need to update the system packages:
sudo apt-get update
If there are some packages installed you can get rid of them with:
sudo apt remove docker docker-engine docker.io containerd runc
You need to import repository gpg key:
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
Now we will add the Docker CE repository to Ubuntu:
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
To install Docker CE on Ubuntu 19.04 run:
sudo apt update
sudo apt install docker-ce docker-ce-cli containerd.io
You can verify the installation with:
sudo docker version
You should get similar output like this:
Client: Docker Engine - Community
Version: 19.03.5
API version: 1.40
Go version: go1.12.12
Git commit: 633a0ea838
Built: Wed Nov 13 07:29:52 2019
OS/Arch: linux/amd64
Experimental: false
Server: Docker Engine - Community
Engine:
Version: 19.03.5
API version: 1.40 (minimum version 1.12)
Go version: go1.12.12
Git commit: 633a0ea838
Built: Wed Nov 13 07:28:22 2019
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.2.10
GitCommit: b34a5c8af56e510852c35414db4c1f4fa6172339
runc:
Version: 1.0.0-rc8+dev
GitCommit: 3e425f80a8c931f88e6d94a8c831b9d5aa481657
docker-init:
Version: 0.18.0
GitCommit: fec3683
We can also check if the docker daemon is started with the following command:
sudo systemctl status docker
The output should look like:
docker.service - Docker Application Container Engine
Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
Active: active (running) since Fri 2019-12-13 23:27:50 CET; 9min ago
Docs: https://docs.docker.com
Main PID: 9941 (dockerd)
Tasks: 13
CGroup: /system.slice/docker.service
└─9941 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
Docker command
If you want to check all available subcommands, run:
sudo docker
Output:
Commands:
attach Attach local standard input, output, and error streams to a running container
build Build an image from a Dockerfile
commit Create a new image from a container's changes
cp Copy files/folders between a container and the local filesystem
create Create a new container
diff Inspect changes to files or directories on a container's filesystem
events Get real time events from the server
exec Run a command in a running container
export Export a container's filesystem as a tar archive
history Show the history of an image
images List images
import Import the contents from a tarball to create a filesystem image
info Display system-wide information
inspect Return low-level information on Docker objects
kill Kill one or more running containers
load Load an image from a tar archive or STDIN
login Log in to a Docker registry
logout Log out from a Docker registry
logs Fetch the logs of a container
pause Pause all processes within one or more containers
port List port mappings or a specific mapping for the container
ps List containers
pull Pull an image or a repository from a registry
push Push an image or a repository to a registry
rename Rename a container
restart Restart one or more containers
rm Remove one or more containers
rmi Remove one or more images
run Run a command in a new container
save Save one or more images to a tar archive (streamed to STDOUT by default)
search Search the Docker Hub for images
start Start one or more stopped containers
stats Display a live stream of container(s) resource usage statistics
stop Stop one or more running containers
tag Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE
top Display the running processes of a container
unpause Unpause all processes within one or more containers
update Update configuration of one or more containers
version Show the Docker version information
wait Block until one or more containers stop, then print their exit codes
Also, if you want to check the system information about Docker, run:
sudo docker info
To check only the space available for the docker containers on your machine execute:
sudo docker info | grep "Data Space"
Conclusion
In this tutorial we shown you how to install docker on Ubuntu 19.04 and if you have some further questions please put a comment in the box below. Feel free to leave a comment below and if you find this tutorial useful, follow our official channel on telegram.