#!/bin/bash

set -e

# If this is an archive branch (like v1.4 or v1.11),
# build and push the docs-base branch at the end of
# a successful build of the branch

if [[ $SOURCE_BRANCH =~ (^v1\.[0-9]+$|^v1[7-9]\.[0-9]+$) ]]; then
  git fetch origin docs-base:docs-base --depth 1 || ( echo "Couldn't fetch docs-base." && exit 1 )
  git checkout docs-base || ( echo "Couldn't check out docs-base." && exit 1 )
  docker build -t docs/docker.github.io:docs-base . || ( echo "Couldn't build docs-base Dockerfile." && exit 1 )
  docker push docs/docker.github.io:docs-base || ( echo "Coudn't push new docs-base image." && exit 1 )
fi