How to Install Docker and Docker-compose Offline on Linux (Using Ubuntu as an Example)

## Preface

Nowadays, the biggest hurdle for many domestic developers when using Docker is: installing Docker on a Linux server!

Today, I'm writing an article to document the detailed steps of an old dog installing Docker offline on an Ubuntu system.

> Declaration:
> 
> 1. This article uses `Ubuntu 22` as the system version; for other versions, please adapt accordingly.
> 2. All commands in this article are executed under superuser privileges. If you are not using the `root` user, please add `sudo` yourself.
> 3. This article mainly references a Zhihu article: [Docker Offline Installation Tutorial](https://zhuanlan.zhihu.com/p/578402141)

## Download Docker Offline Installation Package

1. Open the link: https://download.docker.com/linux/static/stable/
2. Find the folder corresponding to your system architecture (the mainstream currently is `x86_64`, corresponding to `amd64`);
3. Find the `docker-xx.xx.x.tgz` file and start downloading;
4. After the download is complete, proceed with the installation preparation.

> Tips:
> 
> 1. `xx.xx.x` represents the version number. For example, the old dog chose `28.4.0`. Download as needed; if there are no special requirements, you can download the latest version.
> 2. If you are unsure of your system architecture, you can try running commands like `arch` or `lsb_release -a` to check;

## Install Docker

1. Upload the previously downloaded file to the server (just create any empty directory);
2. Run the command to extract the file: `tar xvf docker-xx.xx.x.tgz` (change the filename to the one you downloaded);
3. Run the command to move the files: `cp docker/* /usr/bin`;
4. Run the command to create and edit the service script: `vim /etc/systemd/system/docker.service`;
5. Paste the following `docker.service` script into the file and save it;
6. Run the command to add execution permissions: `chmod +x /etc/systemd/system/docker.service`;
7. Run the command to reload system services: `systemctl daemon-reload`;
8. Run the command to set Docker to start on boot: `systemctl enable docker.service`;
9. Run the command to start Docker: `systemctl start docker`;
10. Run the command to check the Docker version: `docker -v`.

After the above ten steps, if the Docker version is successfully output, for example: `Docker version 28.4.0, build d8eb465`, it indicates a successful installation!

Below is the script needed for step five:

### docker.service Script

```sh
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target

[Service]
Type=notify
ExecStart=/usr/bin/dockerd
ExecReload=/bin/kill -s HUP $MAINPID
LimitNOFILE=infinity
LimitNPROC=infinity
TimeoutStartSec=0
Delegate=yes
KillMode=process
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s

[Install]
WantedBy=multi-user.target
```

## Download and Install Docker-Compose

Installing Docker-Compose is much simpler:

1. Go to Github (`https://github.com/docker/compose/releases`) and find the version you need;
2. Download the executable file adapted for your system, for example: `docker-compose-linux-x86_64`;
3. Upload the downloaded file to the server;
4. Execute the command to move and rename the executable file: `cp -f ./docker-compose-linux-x86_64 /usr/local/bin/docker-compose`;
5. Grant execution permissions: `chmod +x /usr/local/bin/docker-compose`;
6. Done.

If you need the file downloads mentioned in this article, you can go to my Yuanli Push to get them: [Docker Offline Package (x86_64-28.4.0)](https://dingdangdog.yuanlitui.com/a/a821)