Make publish_book() publish to connect.posit.cloud by default

[yihui]

close #1507

[yihui]

@cderv Do you mind taking a look at the gh-pages deployment?

bookdown/.github/workflows/Book.yaml

Lines 100 to 111 in 86e3631

	- name: Build Gitbook only
	env:
	DEPLOY_GH_PAGES: ${{ github.event.inputs.ghpages }}
	if: github.event_name == 'workflow_dispatch'
	run: make -C inst/examples gitbook
	- name: Deploy Gitbook to gh-pages
	if: github.event_name == 'workflow_dispatch' && github.event.inputs.ghpages
	uses: JamesIves/github-pages-deploy-action@v4
	with:
	branch: gh-pages
	folder: inst/examples/_book

I don't remember when it stopped working, but I'm hoping to pull from gh-pages on connect.posit.cloud so we can still enjoy the automatic publishing from CI. Thanks!

[cderv]

We just added

   if: github.event_name == 'workflow_dispatch'

So it currently only work on manual trigger, and to build book with Pandoc devel

bookdown/.github/workflows/Book.yaml

Lines 22 to 27 in 13bcda7

	workflow_dispatch:
	inputs:
	ghpages:
	description: 'Build gitbook with pandoc devel and deploy gitbook to gh-page for checking differences'
	required: false
	default: true

We just need to make it the default way to build book.

I'll make a PR.