chore: revert files ignore action removal (#9071)

Co-authored-by: César Arroba <19954079+cesararroba@users.noreply.github.com>

.github/workflows/mcp-pull-request.yml

@@ -0,0 +1,105 @@
+name: 'MCP: Pull Request'
+
+on:
+  push:
+    branches:
+      - 'master'
+      - 'v5.*'
+    paths:
+      - '.github/workflows/mcp-pull-request.yml'
+      - 'mcp_server/**'
+  pull_request:
+    branches:
+      - 'master'
+      - 'v5.*'
+    paths:
+      - '.github/workflows/mcp-pull-request.yml'
+      - 'mcp_server/**'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  MCP_WORKING_DIR: ./mcp_server
+  IMAGE_NAME: prowler-mcp
+
+jobs:
+  check-changes:
+    if: github.repository == 'prowler-cloud/prowler'
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    outputs:
+      mcp-changed: ${{ steps.filter.outputs.mcp }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+
+      - name: Check for MCP changes
+        id: filter
+        uses: tj-actions/changed-files@24d32ffd492484c1d75e0c0b894501ddb9d30d62 # v47.0.0
+        with:
+          files_ignore: |
+            mcp_server/README.md
+            mcp_server/CHANGELOG.md
+
+      - name: Set output
+        id: set-output
+        run: |
+          if [[ "${{ steps.filter.outputs.any_changed }}" == "true" ]]; then
+            echo "mcp=true" >> $GITHUB_OUTPUT
+          else
+            echo "mcp=false" >> $GITHUB_OUTPUT
+          fi
+
+  dockerfile-lint:
+    needs: check-changes
+    if: github.repository == 'prowler-cloud/prowler' && needs.check-changes.outputs.mcp-changed == 'true'
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    permissions:
+      contents: read
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+
+      - name: Lint Dockerfile with Hadolint
+        uses: hadolint/hadolint-action@2332a7b74a6de0dda2e2221d575162eba76ba5e5 # v3.3.0
+        with:
+          dockerfile: mcp_server/Dockerfile
+
+  container-build-and-scan:
+    needs: check-changes
+    if: github.repository == 'prowler-cloud/prowler' && needs.check-changes.outputs.mcp-changed == 'true'
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    permissions:
+      contents: read
+      security-events: write
+      pull-requests: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
+
+      - name: Build MCP container
+        uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6.18.0
+        with:
+          context: ${{ env.MCP_WORKING_DIR }}
+          push: false
+          load: true
+          tags: ${{ env.IMAGE_NAME }}:${{ github.sha }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Scan MCP container with Trivy
+        uses: ./.github/actions/trivy-scan
+        with:
+          image-name: ${{ env.IMAGE_NAME }}
+          image-tag: ${{ github.sha }}
+          fail-on-critical: 'false'
+          severity: 'CRITICAL'