Support tagging the image

[gaetan-craft]

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Description

It would be nice to be able to add tags to the created image which would help further search of the app

Use Case(s)

get all image build with a given version for example

Potential configuration

image_tags = list(string)

Potential References

[gaetan-craft]

I circumvent this by using post-processor. Here is the code I use to do this if someone finding this issue want to do it.
In the hcl file

locals {
  tags = {
    Name      = "base app ${var.version} webserver ${var.webserver} {{ timestamp }}"
    Version   = var.version
    Vector    = var.vector_version
  }
}

build {
  name    = "scaleway"
  sources = ["source.scaleway.base"]
  post-processor "manifest" {
    output     = "manifest.json"
    strip_path = true
  }
  post-processor "shell-local" {
    script = "scripts/tag-scaleway-image.sh"
    env    = merge({ image_tags = join(" ", keys(local.tags)) }, local.tags)
  }
  post-processor "shell-local" {
    inline = ["rm manifest.json"]
  }
}

the tag-scaleway-image.sh script

#!/bin/bash

set -eo pipefail

if [ ! -e manifest.json ]; then
  echo "no manifest"
  exit 1
fi

artifact_id=$(jq -r '.builds|first.artifact_id' manifest.json)
image_id=${artifact_id##*:}
declare -a args
i=0
for tag in ${image_tags?"image tags env variable should be passed"}; do
  args[$i]="tags.$i='$tag:${!tag}'"
  ((i+=1))
done
scw instance image update "$image_id" "${args[@]}"