Docker Linux installation failure about ngrok-docs HOT 1 CLOSED

root@8493fba870ed:/# curl -s https://ngrok-agent.s3.amazonaws.com/ngrok.asc | \
  tee /etc/apt/trusted.gpg.d/ngrok.asc >/dev/null && \
  echo "deb https://ngrok-agent.s3.amazonaws.com buster main" | \
  tee /etc/apt/sources.list.d/ngrok.list && \
  apt update && apt install ngrok
deb https://ngrok-agent.s3.amazonaws.com buster main
Get:1 https://ngrok-agent.s3.amazonaws.com buster InRelease [20.3 kB]
Hit:2 http://ports.ubuntu.com/ubuntu-ports jammy InRelease
Hit:3 http://ports.ubuntu.com/ubuntu-ports jammy-updates InRelease
Get:4 https://ngrok-agent.s3.amazonaws.com buster/main arm64 Packages [3224 B]
Hit:5 http://ports.ubuntu.com/ubuntu-ports jammy-backports InRelease
Hit:6 http://ports.ubuntu.com/ubuntu-ports jammy-security InRelease
Fetched 23.5 kB in 1s (30.1 kB/s)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
21 packages can be upgraded. Run 'apt list --upgradable' to see them.
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following NEW packages will be installed:
  ngrok
0 upgraded, 1 newly installed, 0 to remove and 21 not upgraded.
Need to get 5744 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 https://ngrok-agent.s3.amazonaws.com buster/main arm64 ngrok arm64 3.5.0 [5744 kB]
Fetched 5744 kB in 1s (7251 kB/s)
debconf: delaying package configuration, since apt-utils is not installed
Selecting previously unselected package ngrok.
(Reading database ... 4975 files and directories currently installed.)
Preparing to unpack .../archives/ngrok_3.5.0_arm64.deb ...
Unpacking ngrok (3.5.0) ...
Setting up ngrok (3.5.0) ...```