0k-charms/rocketchat/actions/upstream-versions

#!/bin/bash
# compose: no-hooks

## List upstream available versions in reverse chronological order
##
## These versions information will be the input for the version
## information usually used by the build process.
##
## A external query of upstream sources will be done.
##
## By default, limit should be 1 (the latest version)

usage="$exname [-h|--help] [-l|--limit <limit>]"

version_limit=5
while [ "$1" ]; do
    case "$1" in
        "--help"|"-h")
            print_usage
            exit 0
            ;;
        "--limit"|"-l")
            version_limit="$2"
            shift
            ;;
        *)
            err "Unexpected argument '$1'."
            exit 1
        ;;
    esac
    shift
done

set -e

DOCKER_IMAGE_NAME=rocketchat/rocket.chat

docker-tags-fetch "$DOCKER_IMAGE_NAME" -l "20" -f "^[0-9]+\.[0-9]+\.[0-9]+$" |
    sort -rV |
    head -n "${version_limit}"