Merge PR #4787: Updated docs build process

Makefile

@@ -68,6 +68,23 @@ godocs:
 	@echo "--> Wait a few seconds and visit http://localhost:6060/pkg/github.com/cosmos/cosmos-sdk/types"
 	godoc -http=:6060
 
+build-docs:
+	@cd docs && \
+	while read p; do \
+		(git checkout $${p} && npm install && VUEPRESS_BASE="/$${p}/" npm run build) ; \
+		mkdir -p ~/output/$${p} ; \
+		cp -r .vuepress/dist/* ~/output/$${p}/ ; \
+		echo "<a href='$${p}'>$${p}</a>" >> ~/output/index.html ; \
+	done < versions ;
+
+sync-docs:
+	cd ~/output && \
+	echo "role_arn = ${DEPLOYMENT_ROLE_ARN}" >> /root/.aws/config ; \
+	echo "CI job = ${CIRCLE_BUILD_URL}" >> version.html ; \
+	aws s3 sync . s3://${WEBSITE_BUCKET} --profile terraform --delete ; \
+	aws cloudfront create-invalidation --distribution-id ${CF_DISTRIBUTION_ID} --profile terraform --path "/*" ;
+.PHONY: sync_docs
+
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