portainer/app/docker/helpers/imageHelper.js

import _ from 'lodash-es';
import { RegistryTypes } from 'Portainer/models/registryTypes';

angular.module('portainer.docker').factory('ImageHelper', ImageHelperFactory);
function ImageHelperFactory() {
  return {
    isValidTag,
    createImageConfigForContainer,
    getImagesNamesForDownload,
    removeDigestFromRepository,
    imageContainsURL,
  };

  function isValidTag(tag) {
    return tag.match(/^(?![\.\-])([a-zA-Z0-9\_\.\-])+$/g);
  }

  function getImagesNamesForDownload(images) {
    var names = images.map(function (image) {
      return image.RepoTags[0] !== '<none>:<none>' ? image.RepoTags[0] : image.Id;
    });
    return {
      names: names,
    };
  }

  /**
   *
   * @param {PorImageRegistryModel} registry
   */
  function createImageConfigForContainer(imageModel) {
    return {
      fromImage: buildImageFullURI(imageModel),
    };
  }

  function imageContainsURL(image) {
    const split = _.split(image, '/');
    const url = split[0];
    if (split.length > 1) {
      return _.includes(url, '.') || _.includes(url, ':');
    }
    return false;
  }

  function removeDigestFromRepository(repository) {
    return repository.split('@sha')[0];
  }
}
/**
 * builds the complete uri for an image based on its registry
 * @param {PorImageRegistryModel} imageModel
 */
export function buildImageFullURI(imageModel) {
  if (!imageModel.UseRegistry) {
    return imageModel.Image;
  }

  let fullImageName = '';

  switch (imageModel.Registry.Type) {
    case RegistryTypes.GITLAB:
      fullImageName = imageModel.Registry.URL + '/' + imageModel.Registry.Gitlab.ProjectPath + (imageModel.Image.startsWith(':') ? '' : '/') + imageModel.Image;
      break;
    case RegistryTypes.ANONYMOUS:
      fullImageName = imageModel.Image;
      break;
    case RegistryTypes.QUAY:
      fullImageName =
        (imageModel.Registry.URL ? imageModel.Registry.URL + '/' : '') +
        (imageModel.Registry.Quay.UseOrganisation ? imageModel.Registry.Quay.OrganisationName : imageModel.Registry.Username) +
        '/' +
        imageModel.Image;
      break;
    default:
      fullImageName = imageModel.Registry.URL + '/' + imageModel.Image;
      break;
  }

  if (!imageModel.Image.includes(':')) {
    fullImageName += ':latest';
  }

  return fullImageName;
}