Revert "refactor(setup-db): to run trivy in docker (#54)"

This reverts commit 81eda53a59.

renovate.json

@@ -4,17 +4,6 @@
     "local>t.behrendt/renovate-configs:common",
     "local>t.behrendt/renovate-configs:action"
   ],
-  "customManagers": [
-    {
-      "customType": "regex",
-      "description": "Update Trivy docker image",
-      "managerFilePatterns": ["/(^|/)setup-db/action\\.ya?ml$/"],
-      "datasourceTemplate": "docker",
-      "matchStrings": [
-        "default:\\s*\"(?<depName>ghcr\\.io/aquasecurity/trivy):(?<currentValue>[\\d\\.]+)(?:@(?<currentDigest>sha256:[a-f0-9]+))?\""
-      ]
-    }
-  ],
   "packageRules": [
     {
       "matchManagers": ["dockerfile", "kubernetes", "helmfile", "helm-values"],

setup-db/README.md

@@ -2,9 +2,7 @@
 
 A reusable Gitea Action that sets up the Trivy vulnerability database, restoring from cache if available.
 
-The action runs Trivy inside **Docker** with a restricted container configuration so the Trivy runtime is isolated from the host while the database is downloaded into your cache directory.
-
-**Note:** This action only prepares the vulnerability database. If you run Trivy on the runner host for scans (for example `trivy fs .`), install Trivy separately (e.g. with a `setup-trivy` action or your own step).
+**Note:** This action only sets up the database. Trivy itself must be installed separately (e.g., using the `setup-trivy` action).
 
 ## Usage
 
@@ -38,9 +36,6 @@ jobs:
 
 ## Inputs
 
-| Input            | Description                                                                 | Required | Default |
-| ---------------- | --------------------------------------------------------------------------- | -------- | ------- |
-| `cache-dir`      | Path to the Trivy cache directory                                           | No       | `${{ runner.temp }}/trivy` |
-| `trivy-version`  | Docker image reference for Trivy (digest pin recommended)                   | No       | Pinned `ghcr.io/aquasecurity/trivy` image in `action.yaml` |
-
-**`trivy-version` is optional.** If you omit it, the action uses the default image (version and digest) from `action.yaml`. Set it only when you need a different Trivy image or your own digest pin.
+| Input       | Description                       | Required | Default          |
+| ----------- | --------------------------------- | -------- | ---------------- |
+| `cache-dir` | Path to the Trivy cache directory | No       | `~/.cache/trivy` |

setup-db/action.yaml

@@ -10,10 +10,6 @@ inputs:
     description: "Path to the Trivy cache directory (default: ${{runner.temp}}/trivy)"
     required: false
     default: "${{ runner.temp }}/trivy"
-  trivy-version:
-    description: "Trivy docker image version to use (full image reference including digest is recommended)"
-    required: false
-    default: "ghcr.io/aquasecurity/trivy:0.69.3@sha256:bcc376de8d77cfe086a917230e818dc9f8528e3c852f7b1aff648949b6258d1c"
 
 outputs:
   cache-dir:
@@ -36,21 +32,4 @@ runs:
           trivy-db-${{ steps.current-date.outputs.current-date }}
     - if: steps.restore-db.outputs.cache-hit != 'true'
       shell: bash
-      run: |
-        docker run --rm \
-          --name trivy-db-download \
-          --user "$(id -u):$(id -g)" \
-          --read-only \
-          --env-file /dev/null \
-          --cap-drop ALL \
-          --pids-limit 64 \
-          --memory=512m \
-          --memory-swap=512m \
-          --cpus=1 \
-          --ipc private \
-          --cgroupns private \
-          --security-opt no-new-privileges \
-          --security-opt apparmor=docker-default \
-          --tmpfs /tmp:rw,noexec,nosuid,nodev,size=1g \
-          --mount type=bind,src=${{ inputs.cache-dir }},dst=/cache \
-          ${{ inputs.trivy-version }} fs --download-db-only --cache-dir /cache
+      run: trivy fs --download-db-only --cache-dir "${{ inputs.cache-dir }}"