Check available platforms for docker image:tag

script.sh

# to be pasted into .bashrc or .zshrc
docker_image_platform() {
    if [ -z "$1" ]; then
        echo "Error: Please provide a Docker image name with version."
        return 1
    fi

    local image="$1"
    local version=$(docker --version | awk '{print $3}' | tr -d ',')

    if ! command -v jq &> /dev/null; then
        echo "Error: jq is not installed."
        return 1
    fi

    local url="http://v${version}/distribution/${image}/json"
    local response=$(curl --unix-socket /var/run/docker.sock -s -o /dev/null -w "%{http_code}" "$url")

    if [ "$response" -ge 200 ] && [ "$response" -lt 300 ]; then
        curl -sS --unix-socket /var/run/docker.sock "$url" | jq '.Platforms'
    else
        echo "Error: Unable to retrieve information for $image."
        return 1
    fi
}