Add netlify config for deploy previews (apollographql#2208)

* Add netlify config for deploy previews

* Trigger deploy

* Remove circle config

* Update docs repo branch

* Use buttonlink component

docs/source/index.mdx

@@ -4,25 +4,21 @@ sidebar_title: Introduction
 description: A strongly-typed, caching GraphQL client for iOS, written in Swift
 ---
 
-import { Link } from 'gatsby';
-
 **Apollo iOS** is an [open-source](https://github.com/apollographql/apollo-ios) GraphQL client for native iOS apps, written in Swift. It enables you to execute queries and mutations against a GraphQL server and returns results as operation-specific Swift types.
 
 <p>
-  <Button
+  <ButtonLink
     colorScheme="indigo"
-    as={Link}
-    to="./tutorial/tutorial-introduction/"
+    href="./tutorial/tutorial-introduction/"
     mr="4"
   >
     Start the tutorial
-  </Button>
-  <Button
-    as={Link}
-    to="./installation/"
+  </ButtonLink>
+  <ButtonLink
+    href="./installation/"
   >
     Installation
-  </Button>
+  </ButtonLink>
 </p>
 
 ## Benefits

netlify.toml

@@ -0,0 +1,19 @@
+[build]
+  ignore = "exit 0"
+
+[build.environment]
+  NODE_VERSION = "16"
+
+[context.deploy-preview.build]
+  base = "docs"
+  ignore = "git diff --quiet $CACHED_COMMIT_REF $COMMIT_REF ."
+  command = """\
+  cd ../
+  rm -rf monodocs
+  git clone https://github.com/apollographql/docs --branch main --single-branch monodocs
+  cd monodocs
+  npm i
+  cp -r ../docs local
+  DOCS_LOCAL=true npm run build \
+  """
+  publish = "../monodocs/public"