From 162f20cc723ca791a5752b02f05239186aa2357f Mon Sep 17 00:00:00 2001
From: Andrew Hosgood <andrew.hosgood@nationalarchives.gov.uk>
Date: Mon, 25 Mar 2024 17:39:33 +0000
Subject: [PATCH] Delete untagged Docker images

---
 .github/workflows/remove-untagged.yml | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 .github/workflows/remove-untagged.yml

diff --git a/.github/workflows/remove-untagged.yml b/.github/workflows/remove-untagged.yml
new file mode 100644
index 0000000..e597b08
--- /dev/null
+++ b/.github/workflows/remove-untagged.yml
@@ -0,0 +1,27 @@
+name: Remove untagged container images
+
+on:
+  workflow_dispatch:
+
+jobs:
+  remove-untagged:
+    runs-on: ubuntu-latest
+    env:
+      PER_PAGE: 100
+    steps:
+      - name: Delete untagged images
+        uses: actions/github-script@v6.3.3
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const response = await github.request("GET /orgs/${{ github.repository_owner }}/packages/container/${{ vars.DOCKER_IMAGE_NAME }}/versions",
+              { per_page: ${{ env.PER_PAGE }}
+            });
+            for(version of response.data) {
+                if (version.metadata.container.tags.length == 0 && version.name !== "latest" && version.name !== "preview") {
+                    console.log("Delete " + version.id)
+
+                    const deleteResponse = await github.request("DELETE /orgs/${{ github.repository_owner }}/packages/container/${{ vars.DOCKER_IMAGE_NAME }}/versions/" + version.id, { });
+                    console.log("status " + deleteResponse.status)
+                }
+            }