build: Deploy ImHex-Web as a docker image

.github/workflows/build.yml

@@ -1276,3 +1276,48 @@ jobs:
         env:
           GH_TOKEN: ${{ github.token }}
         run: .github/scripts/delete-artifact.sh github-pages
+
+  docker-image-deploy:
+    runs-on: ubuntu-latest
+    if: github.ref == 'refs/heads/master'
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: 🧰 Checkout
+        uses: actions/checkout@v4
+
+      - name: ⬇️ Download artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: ImHex Web
+          path: out
+
+      - name: 📜 Login to ghcr.io
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: ⛓️ Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/${{ github.repository }}/imhex-web
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=sha
+
+      - name: 🔨 Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: dist/web/Host.Dockerfile
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}