ci: add artifact cleanup workflow

.github/workflows/build.yml

@@ -34,4 +34,24 @@ jobs:
     secrets: inherit
     with:
       artifact: issuer-api
-      tag: "waltid/issuer-api:${{ needs.version.outputs.release_version }}"
+      tag: "waltid/issuer-api:${{ needs.version.outputs.release_version }}"
+  artifact-names:
+    runs-on: ubuntu-latest
+    needs: [ docker-matrix ]
+    outputs:
+      artifacts: ${{ steps.artifact-names.outputs.names }}
+    steps:
+      - name: Extract names from JSON
+        id: artifact-names
+        run: |
+          # Define the JSON input
+          json_data=${{ needs.docker-matrix.outputs.json }}
+          # Use jq to extract names into a list
+          names=$(echo $json_data | jq -r 'map(.name) | @csv' | tr -d '"')
+          # Set the output as an environment variable
+          echo "names=$names" >> $GITHUB_OUTPUT
+  cleanup:
+    uses: walt-id/waltid-identity/.github/workflows/cleanup.yml@feat/docker-build-share
+    needs: [ artifact-names ]
+    with:
+      artifacts: ${{ needs.artifact-names.outputs.artifacts }}

.github/workflows/cleanup.yml

@@ -0,0 +1,38 @@
+name: Delete Artifacts
+
+on:
+  workflow_call:
+    inputs:
+      artifacts:
+        required: true
+        type: string
+
+jobs:
+  delete:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        artifact: [${{ inputs.artifacts }}]
+    steps:
+      - name: Delete artifact
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          artifact_name="${{ matrix.artifact }}"
+          echo "Deleting artifact: $artifact_name"
+
+          # Get the artifact ID for the known artifact name
+          ARTIFACT_ID=$(curl -s \
+            -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
+            "https://api.github.com/repos/${{ github.repository }}/actions/artifacts" | \
+            jq -r ".artifacts[] | select(.name == \"$artifact_name\") | .id")
+
+          # Delete the artifact if found
+          if [ -n "$ARTIFACT_ID" ]; then
+            curl -X DELETE \
+              -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
+              "https://api.github.com/repos/${{ github.repository }}/actions/artifacts/$ARTIFACT_ID"
+            echo "Artifact '$artifact_name' deleted."
+          else
+            echo "No artifact named '$artifact_name' found to delete."
+          fi