Setting up travis to check and update index.xml using reapack-index

!travis-reapack-index-deploy.md

Instructions

1. Generate a new ssh key without a passphrase:

   ssh-keygen -t rsa -b 4096 -f deploy_key -C 'travis index bot'
   

2. Encrypt the generated key with a unique, secure passphrase:

gpg -c deploy_key

3. Add the passphrase in an environment variable named DEPLOY_KEY_PASSPHRASE in travis repo settings
4. Authorize deploy_key.pub to push to your repository on GitHub (Settings > Deploy Keys)
5. Delete deploy_key and deploy_key.pub
6. Commit deploy_key.gpg, deploy.sh (with the executable bit set and the correct repo URL) and .travis.yml

The concurrent build limit should probably be set to 1 on travis just to be safe.

.travis.yml

language: ruby
rvm:
  - 2.3.0
before_install:
  - gem update bundler
  - wget https://github.com/jgm/pandoc/releases/download/1.19.1/pandoc-1.19.1-1-amd64.deb -O pandoc.deb
  - sudo dpkg -i pandoc.deb
  - rm pandoc.deb
install: gem install reapack-index
script: reapack-index --check
deploy:
  provider: script
  script: ./deploy.sh
  on:
    branch: master

deploy.sh

#!/bin/sh

set -e

cd "$(dirname "$0")"

echo $DEPLOY_KEY_PASSPHRASE | gpg --passphrase-fd 0 deploy_key.gpg

eval "$(ssh-agent -s)"
chmod 600 deploy_key
ssh-add deploy_key

git config push.default simple
git config user.name 'User Name'
git config user.email 'your@email.com'
git remote add deploy 'git@github.com:USER/REPO.git'

git fetch --unshallow || true
git checkout "$TRAVIS_BRANCH"
git pull

rvm $TRAVIS_RUBY_VERSION do reapack-index --commit

git push deploy "$TRAVIS_BRANCH"