Detailed explanation of Docker usage under CentOS8

curl https://download.docker.com/linux/centos/docker-ce.repo -o /etc/yum.repos.d/docker-ce.repo
yum install -y https://download.docker.com/linux/fedora/30/x86_64/stable/Packages/containerd.io-1.2.6-3.3.fc30.x86_64.rpm
yum install -y docker-ce

Start command systemctl start docker
service docker start

Shutdown command systemctl stop docker
service docker stop

View Docker status docker info

docker info

docker kill container ID or name

docker logs -f -t container_name

docker top container_name

docker run -d -it 63bd2b510f17 /bin/bash
Or docker run -id d70eaf7277ea # Sometimes it doesn't work docker exec -it 03d80e28c244 /bin/bash

docker inspect 03d80e28c244

docker cp --help

Usage: docker cp [OPTIONS] CONTAINER:SRC_PATH DEST_PATH|-
	docker cp [OPTIONS] SRC_PATH|- CONTAINER:DEST_PATH

Copy files/folders between a container and the local filesystem

Use '-' as the source to read a tar archive from stdin
and extract it to a directory destination in a container.
Use '-' as the destination to stream a tar archive of a
container source to stdout.

Options:
 -a, --archive Archive mode (copy all uid/gid information)
 -L, --follow-link Always follow symbol link in SRC_PATH

vim /usr/lib/systemd/system/docker.service

-H unix:///var/run/docker.sock -H 0.0.0.0:2375

# -H unix:///var/run/docker.sock : Start an external host service and use the docker.sock file for management.
# -H 0.0.0.0:2375 : What client IPs are allowed to access the current service, and what is the port number exposed by the current service. 2375 is a custom port.

systemctl daemon-reload
systemctl restart docker

<build>
 <plugins>
 <plugin>
 <groupId>com.spotify</groupId>
 <artifactId>docker-maven-plugin</artifactId>
 <version>1.2.2</version>
 <configuration>
 <imageName>projects/eureka:1.0</imageName> <!--Specify the image name warehouse/image name: label-->
 <baseImage>openjdk:latest</baseImage> <!--Specify the base image-->
 <dockerHost>http://192.168.74.131:2375</dockerHost> <!-- Specify the service deployment server warehouse address-->
 <entryPoint>["java","-jar","/${project.build.finalName}.jar"]</entryPoint> <!-- Command executed when the container is started-->
 <exposes>
 <expose>8761</expose><!-- Publish port -->
 </exposes>
 <resources>
 <resource>
 <targetPath>/</targetPath> <!-- Specify the directory path to be copied, here is the current directory-->
 <directory>${project.build.directory}</directory> <!-- Specify the root directory to be copied, here is the target directory -->
 <include>${project.build.finalName}.jar</include> <!-- Specify the file to be copied, here refers to the final generated jar package -->
 </resource>
 </resources>
 </configuration>
 </plugin>
 </plugins>
</build>

<pluginGroups>
 <pluginGroup>com.spotify</pluginGroup>
</pluginGroups>

docker run -d -p 8761:8761 --name eureka01 image_name
docker logs -f container_name

docker pull registry

vim /usr/lib/systemd/system/docker.service
========================================================================
Find the Service node and add a new parameter at the end of the ExecStart attribute with the value:
--insecure-registry 192.168.74.131:5000

vim /etc/docker/daemon.json
=========================================================================
Add the following configuration at the end:
{
"insecure-registries":["192.168.74.131:5000"]
}

systemctl daemon-reload
systemctl restart docker

docker run -p 5000:5000 -v /opt/registry:/var/lib/registry --name registry -d registry

# Rename the image docker tag [ImageId] ip:5000/[image name]:[image version number]
docker push ip:5000/[image name]:[image version number]

docker pull ip:5000/[image name]:[image version number]