add workflow

.forgejo/workflows/validate-keys.yaml

@@ -0,0 +1,19 @@
+name: test
+on:
+  push:
+    branches:
+      - 'main'
+  pull_request:
+
+jobs:
+  test:
+    runs-on: docker
+    container:
+      image: 'code.forgejo.org/oci/ci:1'
+    steps:
+      - uses: actions/checkout@v4
+      - run: for i in *.pub; do ./check_key.sh $i; done
+      - run: |
+          echo assembeling authorized keys &&
+          cat keys/*.pub > authorized_keys
+      - run: ssh-keygen -l -f authorized_keys