circleci: add a job to automatically update docs (#3005)

.circleci/config.yml

@@ -7,6 +7,13 @@ defaults: &defaults
   environment:
     GOBIN: /tmp/workspace/bin
 
+docs_update_config: &docs_update_config
+  working_directory: ~/repo
+  docker:
+    - image: tendermint/docs_deployment
+  environment:
+    AWS_REGION: us-east-1
+
 jobs:
   setup_dependencies:
     <<: *defaults
@@ -339,10 +346,25 @@ jobs:
           name: upload
           command: bash .circleci/codecov.sh -f coverage.txt
 
+  deploy_docs:
+    <<: *docs_update_config
+    steps:
+      - checkout
+      - run:
+          name: Trigger website build
+          command: |
+            chamber exec tendermint -- start_website_build
+
 workflows:
   version: 2
   test-suite:
     jobs:
+      - deploy_docs:
+          filters:
+            branches:
+              only:
+                - master
+                - develop
       - setup_dependencies
       - lint:
           requires:

CHANGELOG_PENDING.md

@@ -20,6 +20,7 @@ Special thanks to external contributors on this release:
 
 ### IMPROVEMENTS:
 - [rpc] Add `UnconfirmedTxs(limit)` and `NumUnconfirmedTxs()` methods to HTTP/Local clients (@danil-lashin)
+- [ci/cd] Updated CircleCI job to trigger website build when docs are updated
 
 ### BUG FIXES:
 - [kv indexer] \#2912 don't ignore key when executing CONTAINS