ci: use gh pages (#5609)

.github/workflows/docs.yml

@@ -0,0 +1,31 @@
+name: Documentation
+# This job builds and deploys documenation to github pages.
+# It runs on every push to master.
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+    container:
+      image: tendermintdev/docker-website-deployment
+    steps:
+      - name: Checkout 🛎️
+        uses: actions/checkout@v2.3.1
+        with:
+          persist-credentials: false
+          fetch-depth: 0
+
+      - name: Install and Build 🔧
+        run: |
+          apk add rsync
+          make build-gh-docs
+
+      - name: Deploy 🚀
+        uses: JamesIves/github-pages-deploy-action@3.7.1
+        with:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          BRANCH: gh-pages
+          FOLDER: ~/output

Makefile

@@ -192,7 +192,7 @@ DESTINATION = ./index.html.md
 ###############################################################################
 ###                           Documentation                                 ###
 ###############################################################################
-
+# todo remove once tendermint.com DNS is solved
 build-docs:
 	@cd docs && \
 	while read -r branch path_prefix; do \
@@ -203,6 +203,17 @@ build-docs:
 	done < versions ;
 .PHONY: build-docs
 
+build-gh-docs:
+	@cd docs && \
+	while read -r branch path_prefix; do \
+		(git checkout $${branch} && npm install && VUEPRESS_BASE="/tendermint/$${path_prefix}/" npm run build) ; \
+		mkdir -p ~/output/$${path_prefix} ; \
+		cp -r .vuepress/dist/* ~/output/$${path_prefix}/ ; \
+		cp ~/output/$${path_prefix}/index.html ~/output ; \
+	done < versions ;
+.PHONY: build-docs
+
+# todo remove once tendermint.com DNS is solved
 sync-docs:
 	cd ~/output && \
 	echo "role_arn = ${DEPLOYMENT_ROLE_ARN}" >> /root/.aws/config ; \