I am using axc f 2152 and an 8GB sd card

I am using axc f 2152 and an 8GB sd card.
The firmware version is 2022.6.0.43 and the hardware version is 06.
I’m trying to download docker.
I can’t use the apt command. How can I download it?

There is information on installing and using docker on PLCnext Control devices in Github:
GitHub - PLCnext/Docker_GettingStarted: HowTo get a Docker like container engine (Balena-Engine) running on PLCnext Control. HowTo get a Docker like container engine (Balena-Engine) running on PLCnext Control. - GitHub - PLCnext/Docker_GettingStarted: HowTo get a Docker like container engine (Balena-Engine) running on PL…

Thank you for answer.
I have one more question.
I’m trying to register a Docker service, but there are many commands that cannot be used.
For example, systemctl, service restart, etc.
How do I register for the service?

The commands you mention cannot be used because PLCnext Control devices currently use init rather than systemd as an init daemon.
There are lots of resources on the internet describing how to use init to manage services. The basic steps are described in this knowledge-base article:
Knowledge Base Link: How to run a bash script on a PLC at start up
In your case the bash script would contain the commands to manage your service. There is a lot of information available about writing bash scripts for init.d:
https://www.google.com/search?q=how+to+write+an+init.d+script
As an example, you can take a look at the init.d script that is used to control the PLCnext Runtime, which is in this file on the PLC:
/etc/init.d/plcnext
I hope this helps.