Docker Install Error

[wint0178]

I have been following the instructions in the MC v2 Documentation. I believe I am getting an error in the installation of docker when I enter the following commands, as instructed (Running Raspberry Pi 4 with ARM64 and newest release of Raspberry PI OS just installed last week):

copy the installation script

curl -fsSL https://get.docker.com -o get-docker.sh

execute the script

sh get-docker.sh

enable the docker daemon

systemctl enable docker.service

start the docker daemon

systemctl start docker.service

check the docker daemon is active

systemctl is-active docker.service

Here is what I get when I run that from root user:
root@raspberrypi:/# # copy the installation script
curl -fsSL https://get.docker.com -o get-docker.sh

execute the script

sh get-docker.sh

enable the docker daemon

systemctl enable docker.service

start the docker daemon

systemctl start docker.service

check the docker daemon is active

systemctl is-active docker.service

Executing docker install script, commit: c2de0811708b6d9015ed1a2c80f02c9b70c8ce7b

• sh -c apt-get update -qq >/dev/null
  W: GPG error: https://repos.influxdata.com/debian buster InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D8FF8E1F7DF8B07E
  E: The repository 'https://repos.influxdata.com/debian buster InRelease' is not signed.
  Failed to enable unit: Unit file docker.service does not exist.
  Failed to start docker.service: Unit docker.service not found.
  inactive

As a result of this, I am not able to move on to the install of the influxdb since that gives me an error in the final step (bash: docker: command not found)

I assume it is something really simply and silly for those of you already versed in all of this. Nonetheless, I would greatly appreciate any direction you can provide.

[wint0178]

@wint0178 does anyone know if this is an error that will prevent me from moving forward? I see that the documentation hasn't been updated in a while and am wondering if this is an issue with Raspberry Pi OS vs the release of Raspian that was in use when the original documentation was written. I'm mostly at a loss here, any help would be appreciated.

[wint0178]

@wint0178 I think I was able to figure this out by going to https://get.docker.com and following the Usage instructions I have copied below:

To install the latest stable versions of Docker CLI, Docker Engine, and their

dependencies:

1. download the script

$ curl -fsSL https://get.docker.com -o install-docker.sh

2. verify the script's content

$ cat install-docker.sh

3. run the script with --dry-run to verify the steps it executes

$ sh install-docker.sh --dry-run

4. run the script either as root, or using sudo to perform the installation.

$ sudo sh install-docker.sh

[jkandasa]

@wint0178 At the time of writing the document in RPI the default installation does not have docker 20.x or above. Hence I proposed this method. In your installation if you have latest version of docker, you can install with apt install... command. I think I took the steps from https://github.com/docker/docker-install