ent/docs: circleci docs deployment

Summary: keeping docs in sync with entgo.io

Reviewed By: a8m

Differential Revision: D16937603

fbshipit-source-id: 1e07111c3db77ed49a768fc1d369a5ca6df5810e

.circleci/config.yml

@@ -1,4 +1,9 @@
 version: 2.1
+
+orbs:
+  compare-url: iynere/compare-url@1.2.0
+  aws-cli: circleci/aws-cli@0.1.13
+
 jobs:
   unit:
     docker:
@@ -36,6 +41,33 @@ jobs:
         command: |
           cd entc/integration/compose
           docker-compose run test go test ./entc/integration/...
+  docs:
+    docker:
+    - image: circleci/node
+    steps:
+    - checkout
+    - compare-url/reconstruct
+    - compare-url/use:
+        step-name: Checking Docs Modified
+        custom-logic: |
+          if [[ ! $(git diff $COMMIT_RANGE --name-only doc/ ]]; then
+            echo "docs not modified; no need to deploy"
+            circleci step halt
+          fi
+    - run:
+        name: Install Dependencies
+        working_directory: ~/project/doc/website
+        command: yarn
+    - run:
+        name: Build Docs
+        working_directory: ~/project/doc/website
+        command: yarn build
+    - aws-cli/install
+    - aws-cli/configure
+    - run:
+        name: Deploy Docs
+        working_directory: ~/project/doc/website/build/ent
+        command: aws s3 sync . s3://entgo.io --delete --exclude "assets/*"
 
 workflows:
   version: 2.1
@@ -45,3 +77,9 @@ workflows:
     - integration:
         requires:
         - unit
+    - docs:
+        requires:
+        - integration
+        filters:
+          branches:
+            only: master