Circle CI config for Hugo + GitHub Pages + Custom Domain

config.yml

version: 2

workflows:
  version: 2
  build:
    jobs:
      - build
      - deploy:
          requires:
            - build
          filters:
            branches:
              only: master

jobs:
  build:
    docker:
      - image: cibuilds/hugo:latest
    working_directory: ~/blog
    environment:
      HUGO_BUILD_DIR: public
    steps:
      - run: apk update && apk add git
      - checkout
      - run: HUGO_ENV=production hugo -F -v -d $HUGO_BUILD_DIR
      - persist_to_workspace:
          root: public
          paths: .
  deploy:
    docker:
      - image: node:8.10.0
    steps:
      - checkout
      - attach_workspace:
          at: public
      - run:
          name: Disable jekyll builds
          command: touch public/.nojekyll
      - run:
          name: Custom Domain
          command: echo "example.domain" > public/CNAME
      - run:
          name: Install and configure dependencies
          command: |
            npm install -g --silent gh-pages@2.0.1
            git config user.email "ci-build@example.domain"
            git config user.name "ci-build"
      - add_ssh_keys:
          fingerprints:
            - "a4:2f:c8:ed:e9:cd:b7:70:36:18:f8:55:c9:16:f2:5c"
      - run:
          name: Delete All SSH keys and Add the installed one
          command: ssh-add -D && ssh-add ~/.ssh/id_rsa_a42fc8ede9cdb7703618f855c916f25c
      - run:
          name: Deploy docs to gh-pages branch
          command: gh-pages --dotfiles --message "[skip ci] Updates" --dist public