From da7c321b3b6fa57751ca958c4285e173842e173e Mon Sep 17 00:00:00 2001
From: peaceiris <30958501+peaceiris@users.noreply.github.com>
Date: Sun, 8 Dec 2019 17:21:16 +0900
Subject: [PATCH] gha: Add workflow to purge readme image cache

---
 .../workflows/purge-readme-image-cache.yml    | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 .github/workflows/purge-readme-image-cache.yml

diff --git a/.github/workflows/purge-readme-image-cache.yml b/.github/workflows/purge-readme-image-cache.yml
new file mode 100644
index 0000000..11aa7f4
--- /dev/null
+++ b/.github/workflows/purge-readme-image-cache.yml
@@ -0,0 +1,19 @@
+name: Purge image cache
+
+on:
+  push:
+    branches:
+      - master
+  schedule:
+    - cron: '4 18 * * *'
+
+jobs:
+  purge:
+    runs-on: ubuntu-18.04
+    steps:
+
+    - run: |
+        IMAGE_LIST=$(curl -sL https://github.com/${GITHUB_REPOSITORY} | \
+          grep -oE '<img src="https?://camo.githubusercontent.com/[^"]+' | \
+          sed -e 's/<img src="//')
+        echo ${IMAGE_LIST} | xargs -I % curl -sX PURGE %