github actions: run daily trivy security scans on release docker imag…

…e, composer/yarn dependencies

- add badge to README
- any time a new vulnerability is found by this workflow, means it is probably time to update Shaarli's base docker image and perform a new release, and/or update npm dependencies (npm audit fix) or composer dependencies (composer update)
- similar jobs already exist in the pipeline for master/latest docker image but will not raise an error
- fixes shaarli#1531

.github/workflows/trivy-release.yml

@@ -0,0 +1,25 @@
+name: trivy security scans (release)
+on:
+  schedule:
+    - cron: '0 17 * * 1'
+  workflow_dispatch:
+
+jobs:
+  trivy-repo:
+    runs-on: ubuntu-latest
+    name: trivy scan (release composer/yarn dependencies)
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Run trivy scanner on repository
+        run: make test_trivy_repo TRIVY_TARGET_BRANCH=origin/release TRIVY_EXIT_CODE=1
+  trivy-docker:
+    runs-on: ubuntu-latest
+    name: trivy scan (release docker image)
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Run trivy scanner on release docker image
+        run: make test_trivy_docker TRIVY_TARGET_DOCKER_IMAGE=ghcr.io/shaarli/shaarli:release

Makefile

@@ -199,6 +199,8 @@ TRIVY_VERSION=0.44.0
 TRIVY_EXIT_CODE=1
 # default docker image to scan with trivy
 TRIVY_TARGET_DOCKER_IMAGE=ghcr.io/shaarli/shaarli:latest
+# branch on which test_trivy_repo should be run. leave undefined for the current branch
+#TRIVY_TARGET_BRANCH=origin/release
 
 ### download trivy vulneravbility scanner
 download_trivy:
@@ -211,5 +213,9 @@ test_trivy_docker: download_trivy
 
 ### run trivy vulnerability scanner on composer/yarn dependency trees
 test_trivy_repo: download_trivy
+ifdef TRIVY_TARGET_BRANCH
+	git checkout $(TRIVY_TARGET_BRANCH) composer.lock
+	git checkout $(TRIVY_TARGET_BRANCH) yarn.lock
+endif
 	./trivy --exit-code $(TRIVY_EXIT_CODE) fs composer.lock
 	./trivy --exit-code $(TRIVY_EXIT_CODE) fs yarn.lock

README.md

@@ -9,6 +9,7 @@ _It is designed to be personal (single-user), fast and handy._
 [![](https://img.shields.io/badge/release-v0.13.0-blue.svg)](https://github.com/shaarli/Shaarli/releases/tag/v0.13.0)
 [![](https://img.shields.io/badge/master-v0.13.x-blue.svg)](https://github.com/shaarli/Shaarli)
 [![](https://github.com/shaarli/Shaarli/actions/workflows/ci.yml/badge.svg)](https://github.com/shaarli/Shaarli/actions)
+[![](https://github.com/shaarli/Shaarli/actions/workflows/trivy-release.yml/badge.svg)](https://github.com/shaarli/Shaarli/actions)
 [![Join the chat at https://gitter.im/shaarli/Shaarli](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/shaarli/Shaarli)
 [![Docker repository](https://img.shields.io/docker/pulls/shaarli/shaarli.svg)](https://github.com/shaarli/Shaarli/pkgs/container/shaarli)