feat(workflow): add pr validation

.github/workflows/pr.yaml

@@ -0,0 +1,79 @@
+name: "🩺 PR Validation"
+
+on:
+  pull_request:
+    branches: ["master"]
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  pre-build-check:
+    name: 🔍 Pre-Build Security & Quality
+    runs-on: ubuntu-latest
+    steps:
+      - name: 📥 Checkout repository
+        uses: actions/checkout@v4
+
+      - name: 🐳 Lint Dockerfile
+        uses: hadolint/hadolint-action@v3.1.0
+        with:
+          dockerfile: Dockerfile
+          failure-threshold: error
+
+      - name: 🛡️ Scan FS for Secrets and Configs
+        uses: aquasecurity/trivy-action@master
+        with:
+          scan-type: 'fs'
+          scan-ref: '.'
+          scanners: 'vuln,secret,config' 
+          hide-progress: true
+          format: 'table'
+          exit-code: '1' 
+          severity: 'CRITICAL,HIGH'
+
+      - name: 🏗️ Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 24
+          cache: 'npm'
+
+      - name: 📦 Install dependencies
+        run: npm ci --legacy-peer-deps
+
+      - name: 🧹 Lint Check
+        run: npm run lint
+
+  build-test:
+    name: ⚙️ Test Docker Build
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+
+    steps:
+      - name: 📥 Checkout repository
+        uses: actions/checkout@v4
+
+      - name: 🤖 Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=sha,format=short,prefix=
+
+      - name: ⚙️ Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: 🚀 Build (Dry Run)
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: false 
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha 
+          cache-to: type=gha,mode=max
+          build-args: |
+            NEXT_PUBLIC_BUILD_VERSION=${{ steps.meta.outputs.version }}