add trivy scanner

.github/workflows/trivy-scan.yaml

@@ -0,0 +1,36 @@
+name: Trivy - Scan
+on:
+  pull_request:
+jobs:
+  trivy:
+    name: Scan
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout project
+      uses: actions/checkout@v4
+
+    - name: Run Trivy scanner
+      uses: aquasecurity/trivy-action@master
+      env:
+        TRIVY_SKIP_DB_UPDATE: true
+        TRIVY_SKIP_JAVA_DB_UPDATE: true
+      with:
+        scan-type: fs
+        format: table
+        scan-ref: .
+        hide-progress: false
+        output: trivy.txt
+        severity: CRITICAL
+        ignore-unfixed: true
+        exit-code: 1
+
+    - name: Publish Trivy Output to Summary
+      run: |
+        if [[ -s trivy.txt ]]; then
+          {
+            echo "### Security Output"
+            echo '```terraform'
+            cat trivy.txt
+            echo '```'
+          } >> $GITHUB_STEP_SUMMARY
+        fi

.github/workflows/trivy-udpate-cache.yaml

@@ -0,0 +1,40 @@
+# https://github.com/aquasecurity/trivy-action
+
+name: Trivy - Cache Update
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 0 * * *'
+
+jobs:
+  update-trivy-db:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Setup oras
+        uses: oras-project/setup-oras@v1
+
+      - name: Get current date
+        id: date
+        run: |
+          echo "date=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT
+
+      - name: Download and extract the vulnerability DB
+        run: |
+          mkdir -p $GITHUB_WORKSPACE/.cache/trivy/db
+          oras pull ghcr.io/aquasecurity/trivy-db:2
+          tar -xzf db.tar.gz -C $GITHUB_WORKSPACE/.cache/trivy/db
+          rm db.tar.gz
+
+      - name: Download and extract the Java DB
+        run: |
+          mkdir -p $GITHUB_WORKSPACE/.cache/trivy/java-db
+          oras pull ghcr.io/aquasecurity/trivy-java-db:1
+          tar -xzf javadb.tar.gz -C $GITHUB_WORKSPACE/.cache/trivy/java-db
+          rm javadb.tar.gz
+
+      - name: Cache DBs
+        uses: actions/cache/save@v4
+        with:
+          path: ${{ github.workspace }}/.cache/trivy
+          key: cache-trivy-${{ steps.date.outputs.date }}