PIPELINE-86: Updated readme and added a job to prevent workflow from …

…being disabled

.github/workflows/keepalive.yml

@@ -0,0 +1,14 @@
+name: Github Action with a cronjob trigger
+on:
+  schedule:
+    - cron: "0 0 * * *"
+permissions:
+  actions: write
+jobs:
+  cronjob-based-github-action:
+    name: Cronjob based github action
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: gautamkrishnar/keepalive-workflow@3eb47f21355191080dca0f7662d45c192d2ef64d # v2.0.7
+

README.md

@@ -2,4 +2,10 @@
 
 The official Trivy DB is hitting rate limit frequently due to a very high usage. The goal of this codebase is to make available a clone of the official repo for our own usage.
 
-The workflow in this repo has been inspired by: https://github.com/aquasecurity/trivy-db/blob/main/.github/workflows/cron.yml
+Configuration has been inspired from documentation available here: https://aquasecurity.github.io/trivy/v0.55/docs/advanced/air-gap/#offline-mode, with one workflow per OCI database.
+
+Corresponding workflows:
+ - https://github.com/aquasecurity/trivy-checks/blob/main/.github/workflows/release.yaml
+ - https://github.com/aquasecurity/trivy-db/blob/main/.github/workflows/cron.yml
+ - https://github.com/aquasecurity/trivy-java-db/blob/main/.github/workflows/cron.yml
+