Docker

The Docker page lets you manage Docker on the server without typing commands: view, start, stop and delete the applications running in Docker (called containers) and clean up Docker data you no longer use.

Requirements

• The Docker page is available for servers on a paid plan only.
• The server needs the Docker application installed (via the Apps menu, see Application). Once installed, the Docker item appears in the server menu.

The management interface has four main areas, corresponding to four tabs:

1. Containers: Your running "applications".
2. Images: The "installers" used to create your applications.
3. Volumes: The "hard drives" that store your application data.
4. Networks: The "internal network system" that allows your applications to connect with each other.

On every tab, you can click Refresh to reload the list.

1. Containers Tab: Manage Your "Applications"

This is where you can see and interact with all of your "applications" (containers), whether they are running or stopped.

The Dashboard

• Status: Tells you if the application is Running (green), Pause, or Stop (gray).
• Name: The name of the application, along with its ID and the image ("installer") used to create it.
• Port: The "communication gates" of the application to the outside world.
• Size, Log, and Action.

Key Features

• View Application Details: Click the container name. The Container Info window pops up with information such as performance (CPU, memory, disk, network, running processes), network ports, mounted volumes, and environment variables. Turn on Auto refresh to keep the numbers updated; if there are many environment variables, click Show all to see them all.
• Rename Application: Click the pencil icon next to the container name, enter a new name, then click Rename.
• Action Buttons:
  • Start: Starts a stopped application.
  • Stop: Stops a running application.
  • Pause: Pauses an application without completely shutting it down.
  • Restart: Restarts the application.
  • Delete Container: Deletes the application. A confirmation dialog appears to ensure you don't delete something by mistake. Check Delete container forcefully to delete it even if the container is running.
• View Logs: Click the icon in the Log column to see the "activity diary" of the application, which helps you understand what it has been doing.
• Bulk actions: Tick several containers to start, stop, pause, or delete them at once. Use the search box to filter the list quickly.

2. Images Tab: Manage Your "Installers"

An Image is like an "installer" file (e.g., setup.exe on Windows) that you use to create your "applications" (containers).

The Dashboard

• Status: Indicates whether this "installer" is currently used by any application (In use) or not (Not in use).
• Name: The name of the installer, along with its Tag and Image ID.
• Container: Lists the names of the applications that were created from this installer. You can click an application name to see its details.
• Size: The disk space the installer occupies.

Key Features

• View Online Info: Click the image name, and you will be taken to its "homepage" on the internet (like Docker Hub) to see more detailed information.
• Delete Image: Similar to deleting containers, you can delete "installers" you no longer need to free up disk space. The system will also ask if you want to "force delete." You can tick several images to delete them at once.
• Remove all unused images: Removes every image that no container uses.
• Note: You cannot delete an image that is currently being used by a container. You need to delete the container first.

3. Volumes Tab: Manage Your Data "Drives"

A Volume can be thought of as a "portable hard drive" or a "USB stick" for your application. It helps store important data, and this data will not be lost even if you delete the application.

Key Features

• Clone Volume: A very useful feature for backing up data. Enter a new Volume Name and click Clone to create a new "drive" (a new volume) with an exact copy of all the data from the selected volume. It's perfect for creating a backup before making a major change.
• Delete Volume: Deletes the "drive" and all the data inside it. You can tick several volumes to delete them at once, or click Remove all unused volumes to clean up volumes no container uses.
• Important Warning: Deleting a volume will permanently erase all data within it. Make sure you have backed it up if necessary.

4. Networks Tab: Manage "Network Connections"

This area manages how your "applications" connect and "talk" to each other and to the internet. Usually, you won't need to interact with this section much.

Key Features

• Remove all unused networks: This is a "cleanup" function. It will find and allow you to delete network connections that are no longer used by any application, keeping your system tidy.

Important Note

You will notice networks named bridge, host, and none. These are the default system networks created by Docker, which are essential for its operation. Docker is smartly designed to prevent you from deleting these critical networks, so you can use it with peace of mind.