login-action/src/main.ts

import * as yaml from 'js-yaml';
import * as core from '@actions/core';
import * as actionsToolkit from '@docker/actions-toolkit';

import * as context from './context';
import * as docker from './docker';
import * as stateHelper from './state-helper';

export async function main(): Promise<void> {
  const inputs: context.Inputs = context.getInputs();
  stateHelper.setLogout(inputs.logout);

  if (inputs.registryAuth && (inputs.registry || inputs.username || inputs.password || inputs.scope || inputs.ecr)) {
    throw new Error('Cannot use registry-auth with other inputs');
  }

  if (!inputs.registryAuth) {
    stateHelper.setRegistries([inputs.registry || 'docker.io']);
    await docker.login({
      registry: inputs.registry || 'docker.io',
      username: inputs.username,
      password: inputs.password,
      scope: inputs.scope,
      ecr: inputs.ecr || 'auto'
    });
    return;
  }

  const auths = (yaml.load(inputs.registryAuth) as docker.Auth[]).map(auth => ({
    registry: auth.registry || 'docker.io',
    username: auth.username,
    password: auth.password,
    scope: auth.scope,
    ecr: auth.ecr || 'auto'
  }));
  if (auths.length == 0) {
    throw new Error('No registry to login');
  }

  stateHelper.setRegistries(auths.map(auth => auth.registry).filter((value, index, self) => self.indexOf(value) === index));

  for (const auth of auths) {
    await core.group(`Login to ${auth.registry}`, async () => {
      await docker.login(auth);
    });
  }
}

async function post(): Promise<void> {
  if (!stateHelper.logout) {
    return;
  }
  for (const registry of stateHelper.registries.split(',')) {
    await docker.logout(registry);
  }
}

actionsToolkit.run(main, post);