From d05ac15a19da14909740cf4dd89e99ce82583fb3 Mon Sep 17 00:00:00 2001
From: Leonard Ehrenfried <mail@leonard.io>
Date: Fri, 24 Nov 2023 10:15:19 +0100
Subject: [PATCH 1/2] Remove container images that have not been pulled for
 over a year

---
 .github/workflows/prune-container-images.yml | 22 ++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 .github/workflows/prune-container-images.yml

diff --git a/.github/workflows/prune-container-images.yml b/.github/workflows/prune-container-images.yml
new file mode 100644
index 00000000000..de5954b9ba9
--- /dev/null
+++ b/.github/workflows/prune-container-images.yml
@@ -0,0 +1,22 @@
+name: 'Delete unused snapshot container images'
+
+on:
+  schedule:
+    - cron: '0 12 1 * *'
+  workflow_dispatch:
+
+jobs:
+  container-image:
+    if: github.repository_owner == 'opentripplanner'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Delete unused container images
+        env:
+          CONTAINER_REPO: opentripplanner/opentripplanner
+          CONTAINER_REGISTRY_USER: otpbot
+          CONTAINER_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_PASSWORD }}
+        run: |
+          # remove all snapshot container images that have not been pulled for over a year
+          # --keep-semver makes sure that any image with a x.y.z version scheme is unaffected by this
+          pip install prune-container-repo==0.0.3
+          prune-container-repo -u ${CONTAINER_REGISTRY_USER} -r ${CONTAINER_REPO} --days=365 --keep-semver --activate

From 053f87572b2c733d9624bc96e19b331ede0a5ff5 Mon Sep 17 00:00:00 2001
From: Leonard Ehrenfried <mail@leonard.io>
Date: Sun, 26 Nov 2023 19:01:21 +0100
Subject: [PATCH 2/2] Correct cron expression

---
 .github/workflows/prune-container-images.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/prune-container-images.yml b/.github/workflows/prune-container-images.yml
index de5954b9ba9..518e8afb67b 100644
--- a/.github/workflows/prune-container-images.yml
+++ b/.github/workflows/prune-container-images.yml
@@ -2,7 +2,7 @@ name: 'Delete unused snapshot container images'
 
 on:
   schedule:
-    - cron: '0 12 1 * *'
+    - cron: '0 12 * * 1'
   workflow_dispatch:
 
 jobs: