how can i install a package by means of a user-data file

[altineller]

Hello,
After Install, I would like to run:

sudo apt install libnss-mdns

Can I accomplish it by putting it on where:

`runcmd:

• 'systemctl restart avahi-daemon'

• 'ifup wlan0'

• 'mkdir /data && chown 1000:1000 /data'

• [ systemctl, stop, docker ]

• [ systemctl, daemon-reload ]

• [ systemctl, enable, docker-tcp.socket ]

• [ systemctl, start, --no-block, docker-tcp.socket ]

• [ systemctl, start, --no-block, docker ]

`
after the ifup wlan0?

Best regards,
C.

[janz93]

Hello @altineller if I understand the issue correctly you want to use libnss-mdns package.
I am also very new to cloud init myself but if I understand the documentation correctly you can add it in the package section.
You need to add the package section in the file which you import via --userdata|-u

You file should look similar to the following:

#cloud-config
...
packages:
 - libnss-mdns
...

Maybe this will answer your question