Docker: A repository from ZoranStojsavljevic

Installing docker on F39

vuser@fedora39-ssd-2TB:~$ sudo dnf install docker
Fedora 39 - x86_64 - VirtualBox                                              13 kB/s | 819  B
Fedora 39 - x86_64 - VirtualBox                                             5.7 kB/s | 1.7 kB
Fedora 39 - x86_64 - VirtualBox                                              22 kB/s | 819  B
Error: Failed to download metadata for repo 'virtualbox': repomd.xml GPG signature verification error: Signing key not found
Ignoring repositories: virtualbox
Last metadata expiration check: 0:10:00 ago on Sat 16 Dec 2023 11:32:32 AM CET.
Modular dependency problem:

Dependencies resolved.
======================================================================
 Package	Architecture	Version		Repository	Size
======================================================================
Installing:
 moby-engine	x86_64		24.0.5-1.fc39	fedora		29 M
Installing
dependencies:
 containerd	x86_64		1.6.23-2.fc39	updates		39 M
 libnet		x86_64		1.3-1.fc39	updates		60 k
 runc		x86_64		2:1.1.8-1.fc39	fedora		3.1 M
Installing weak
dependencies:
 criu		x86_64		3.19-2.fc39	updates		560 k

Transaction Summary
======================================================================
Install  5 Packages

Total download size: 72 M
Installed size: 257 M

Runnig system service docker

vuser@fedora39-ssd-2TB:/etc$ sudo find . -iname docker*
./sysconfig/docker
./systemd/system/sockets.target.wants/docker.socket

vuser@fedora39-ssd-2TB:/etc$ sudo find . -iname mysql*
./dnf/modules.d/mysql.module
./logrotate.d/mysqld
./systemd/system/multi-user.target.wants/mysqld.service

vuser@fedora39-ssd-2TB:/etc$ systemctl status docker.socket 
○ docker.socket - Docker Socket for the API
     Loaded: loaded (/usr/lib/systemd/system/docker.socket; enabled; preset: enabled)
     Active: inactive (dead)
   Triggers: ● docker.service
     Listen: /run/docker.sock (Stream)

vuser@fedora39-ssd-2TB:/etc$ sudo systemctl start docker.socket 

vuser@fedora39-ssd-2TB:/etc$ systemctl status docker.socket 
● docker.socket - Docker Socket for the API
     Loaded: loaded (/usr/lib/systemd/system/docker.socket; enabled; preset: enabled)
     Active: active (listening) since Sat 2023-12-16 12:24:38 CET; 3s ago
   Triggers: ● docker.service
     Listen: /run/docker.sock (Stream)
      Tasks: 0 (limit: 14144)
     Memory: 0B
        CPU: 1ms
     CGroup: /system.slice/docker.socket

sudo docker version

vuser@fedora39-ssd-2TB:~$ sudo docker version
Client:
 Version:           24.0.5
 API version:       1.43
 Go version:        go1.21.0
 Git commit:        %{shortcommit_cli}
 Built:             Sun Aug 27 16:45:40 2023
 OS/Arch:           linux/amd64
 Context:           default

Server:
 Engine:
  Version:          24.0.5
  API version:      1.43 (minimum version 1.12)
  Go version:       go1.21.0
  Git commit:       %{shortcommit_moby}
  Built:            Sun Aug 27 16:45:40 2023
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.6.23
  GitCommit:
 runc:
  Version:          1.1.8
  GitCommit:
 docker-init:
  Version:          0.19.0
  GitCommit:

Docker repositories with images

docker images

Registration https://hub.docker.com/

user id: niemande
Joined December 17, 2023
Email Address: nobodyless@gmail.com (Verified)

How to pull docker image from docker repositories?

Explore option:

https://hub.docker.com/search?q=
sudo docker pull <image name>

Example:

sudo docker pull dokken/fedora-31

Dockerfile

The explanation: dockerfile describes docker environment.

Run Docker Image

Run Docker Image

This documentation is based on the following lines:

List of running containers with image names:

sudo docker ps
<CONTAINER_ID>	<IMAGE_NAME>	COMMAND	CREATED	STATUS	PORTS	<CONTAINER_NAME>

List of inactive docker images with image names:

runningImages=$(docker ps --format {{.Image}})
docker images --format {{.Repository}}:{{.Tag}} | grep -v "$runningImages"

List of docker images in the system:

sudo docker image ls
REPOSITORY/<IMAGE_NAME>	TAG	<IMAGE_ID>	CREATED	SIZE

[Flow-1]: Pull Docker Image from Docker Hub and Run it

[Step-1]: Verify Docker version and also login to Docker Hub

sudo docker version
sudo docker login

[Step-2]: Pull Image from Docker Hub

sudo docker pull stacksimplify/dockerintro-springboot-helloworld-rest-api:1.0.0-RELEASE

[Step-3]: Run the downloaded Docker Image & Access the Application

Fetch the docker image from Docker Hub:

sudo docker run <IMAGE_NAME>

Example by the book:

sudo docker run --name app1 -p 80:8080 -d stacksimplify/dockerintro-springboot-helloworld-rest-api:1.0.0-RELEASE
http://localhost/hello

Example modified from the book!

sudo docker run --rm -it -u $(id -u):$(id -g) -e USER=$USER -e HOME=$HOME -v $HOME:$HOME -v $PWD:$PWD -w $PWD dokken/fedora-31 /bin/bash

Real example (simple one)!

sudo docker run <dokken/fedora-31 <<===== IMAGE_NAME>
sudo docker run dokken/fedora-31 /bin/bash

Real example (complex one)!

sudo docker run --rm -it -e USER=$USER -h $HOSTNAME -e HOME=$HOME -v $HOME:$HOME -v $PWD:$PWD -w $PWD dokken/fedora-31 /bin/bash
sudo docker exec -it <pedantic_yalow <<===== CONTAINER_NAME> /bin/bash

[Flow-2]: Handling containers!

[Step-4]: List Running Containers

sudo docker ps
sudo docker ps -a
sudo docker ps -a -q

[Step-5]: Exit Docker Container without Stopping It

If you want to exit the container's interactive shell
session, but do not want to interrupt the processes
running in it, press Ctrl+P followed by Ctrl+Q.

This operation detaches the container and allows you
to return to your system's shell.

Exit Running Docker Container: Ctrl+P and Ctrl+Q.

[Step-6]: Connect to Container Terminal

sudo docker exec -it <CONTAINER_NAME> /bin/bash

Integrated Example

sudo docker ps
sudo docker ps -a
sudo docker run --rm -it -e USER=$USER -h $HOSTNAME -e HOME=$HOME -v $HOME:$HOME -v $PWD:$PWD -w $PWD <dokken/fedora-31 <<===== IMAGE_NAME> /bin/bash
<Ctrl+P & Ctrl+Q> (exit from running container)
sudo docker ps -a
sudo docker exec -it <pedantic_yalow <<===== CONTAINER_NAME> /bin/bash
OR
sudo docker attach <container-name-or-id>

[Step-7]: Container Stop, Start

sudo docker stop <CONTAINER_NAME>
sudo docker start <CONTAINER_NAME>

[Step-8]: Remove Container

sudo docker stop <CONTAINER_NAME>
sudo docker rm <CONTAINER_NAME>
sudo docker rm -f <CONTAINER_NAME> (forced removal)

sudo docker rm <crazy_golick <<===== CONTAINER_NAME>

[Step-9]: Remove Image

sudo docker images
sudo docker rmi <IMAGE_NAME/IMAGE_ID>

sudo docker rmi <77310cafb345 <<===== IMAGE_ID>

ZoranStojsavljevic/Docker

Docker Tutorial

Docker Container Tutorial by Zoran Stojsavljevic

Docker Compose Tutorial