update docs when merging to master

.circleci/config.yml

@@ -36,6 +36,17 @@ jobs:
           paths:
             - ~/.cache/go-build
 
+  update-docs:
+    docker:
+      - image: circleci/golang:1.12
+    working_directory: /go/src/github.com/jesseduffield/lazydocker
+    steps:
+        - checkout
+        - run:
+            name: Update docs
+            command: |
+              ./.circleci/update_docs.sh
+
   release:
     docker:
       - image: circleci/golang:1.12
@@ -66,6 +77,11 @@ workflows:
   build:
     jobs:
       - build
+      - update-docs:
+          filters:
+            branches:
+              only:
+                - master
   release:
     jobs:
       - release:

.circleci/update_docs.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+set -ex
+
+# see if we have a new cheatsheet
+# if other docs end up being generated automatically we can chuck in the relevant scripts here
+go run scripts/generate_cheatsheet.go
+
+# commit and push if we have a change
+if [[ -z $(git status -s -- docs/*) ]]; then
+  echo "no changes to commit in the docs directory"
+  exit 0
+fi
+
+echo "committing updated docs"
+
+git config user.name "lazydocker bot"
+git config user.email "jessedduffield@gmail.com"
+
+git add docs/*
+git commit -m "update docs"
+git push -u origin HEAD