Docker Installation

Install Docker on Linux

Install related dependencies

sudo yum install -y yum-utils device-mapper-persistent-data lvm2

Add domestic source to improve network transmission efficiency

sudo yum-config-manager --add-repo https://mirrors.ustc.edu.cn/docker-ce/linux/centos/docker-ce.repo

Update yum software source cache and install docker-ce

sudo yum makecache fast
sudo yum install -y docker-ce

Start docker and set it to start automatically

sudo systemctl enable docker
sudo systemctl start docker

Check if docker is installed successfully

docker run hello-world

View docker version information

docker -v

Common Docker Commands

Service-related commands

Start service

sudo systemctl start docker

Stop service

sudo systemctl stop docker

Restart service

sudo systemctl restart docker

View service status

sudo systemctl status docker

Enable service to start automatically

sudo systemctl enable docker

Image-related commands

Image search

docker search [image-name]

Pull image

docker pull [image-name]

TIP

The docker pull command defaults to pulling the latest version of the image. If you need to pull a specific version of the image, you can use the docker pull [image-name]:[tag] command.
If you don't know what version numbers are available, you can check Docker Hub.

View image list

docker images

Delete image

docker rmi [image-id]
#or
docker rmi [image-name]:[tag]

TIP

To accurately delete your target image, it is recommended to use the docker rmi [image-name]:[tag] command when deleting images with multiple versions. If the two image IDs are different, you can also use the image ID for deletion to prevent accidental deletion.
When deleting an image, if the image is being used by a container, you need to stop the container first and then delete the image.
If you want to delete multiple images, you can use the docker rmi [image-id1] [image-id2] ... command.

Container-related commands

Create container

# For example, onlyoffice/documentserver
docker run -i -t -d -p 8000:80 \
  --restart=always \
  -v /docker/onlyOffice/DocumentServer/logs:/var/log/onlyoffice \
  -v /docker/onlyOffice/DocumentServer/data:/var/www/onlyoffice/Data \
  -v /docker/onlyOffice/DocumentServer/lib:/var/lib/onlyoffice \
  -v /docker/onlyOffice/DocumentServer/db:/var/lib/postgresql \
  -e JWT_ENABLED=false \
  onlyoffice/documentserver

Here are some common parameters:

• docker run: Create and start a new container
• -i: Run the container in interactive mode, usually used with -t
• -t: Allocate a pseudo-terminal for the container, usually used with -i
• -d: Run the container in the background and return the container ID
• -p: Map the container port to the host port, in the format of hostPort:containerPort
• --restart=always: Set the container to restart automatically
• -v: Mount the host directory to the container directory, in the format of hostDir:containerDir
• -e: Set environment variables for the container

View container list

# View the list of running containers
docker ps

# View the most recently created container
docker ps -l

# View the list of running container IDs
docker ps -q

# View all containers (including stopped containers)
docker ps -a

# View the list of all container IDs
docker ps -aq

Stop running container

# Stop using the container name
docker stop [container-name]

# Stop using the container ID
docker stop [container-id]

# Stop multiple running containers using the container ID
docker stop [container-id1] [container-id2] ...

Start a stopped container

# Start using the container name
docker start [container-name]

# Start using the container ID
docker start [container-id]

# Start multiple stopped containers using the container ID
docker start [container-id1] [container-id2] ...

Delete container

# Delete using the container name
docker rm [container-name]

# Delete using the container ID
docker rm [container-id]

# Delete multiple containers using the container ID
docker rm [container-id1] [container-id2] ...

TIP

When deleting a container, if the container is running, you need to stop the container first and then delete the container.

Restart container

# Restart using the container name
docker restart [container-name]

# Restart using the container ID
docker restart [container-id]

# Restart multiple containers using the container ID
docker restart [container-id1] [container-id2] ...

Enter the container

# Enter using the container name
docker exec -it [container-name] /bin/bash

# Enter using the container ID
docker exec -it [container-id] /bin/bash