List container registries of all GitLab projects of a given group

index.js

const axios = require('axios');

(async () => {
  const token = '<INSERT YOUR PERSONAL ACCESS TOKEN HERE>';
  const group = '<INSERT GITLAB GROUP NAME HERE>';
  console.log(await main(group, token));
})();

async function main(group, token) {
  const projects = await getGitlabProjects(group, token);
  const result = await Promise.all(
    projects.map(async project => {
      console.log(`Getting container registries for '${project.fullPath}'`);
      return await getProjectContainerRegistries(project.id, token);
    })
  );
  return result.filter(registries => registries.length > 0);
}

async function getGitlabProjects(group, token) {
  const query =
    `{
      group(fullPath: "${group}") {
        projects(includeSubgroups: true) {
          nodes {
            fullPath
            id
          }
        }
      }
    }`;
  const response = await axios({
    url: 'https://gitlab.com/api/graphql',
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'Authorization': `Bearer ${token}`,
      'Accept': 'application/json',
    },
    data: JSON.stringify({ query })
  });
  return (await response.data).data.group.projects.nodes;
}

async function getProjectContainerRegistries(projectId, token) {
  const parts = projectId.split('/');
  const id = parts[parts.length - 1];
  const response = await axios({
    url: `https://gitlab.com/api/v4/projects/${id}/registry/repositories`,
    method: 'GET',
    headers: {
      'Content-Type': 'application/json',
      'Authorization': `Bearer ${token}`,
      'Accept': 'application/json',
    }
  });
  return (await response).data;
}