Added docker images build

.dockerignore

@@ -8,4 +8,7 @@
 .vscode
 Dockerfile
 README.md
-build
+build
+# CI build leftovers at the repo root (the NDK alone is several GB)
+android-ndk-r23b
+*.zip

.github/workflows/build-for-x86_64.yml

@@ -5,9 +5,14 @@ on:
     branches: [ "main" ]
   pull_request:
     branches: [ "main" ]
+  workflow_dispatch:
 
 permissions:
   contents: write
+  packages: write
+
+env:
+  REGISTRY: ghcr.io
 
 jobs:
   build:
@@ -56,4 +61,45 @@ jobs:
         name: Wrapper.x86_64.latest
         tag_name: wrapper.x86_64.latest
         make_latest: true
-        overwrite: true
+        overwrite: true
+
+    # Both ExternalProject targets compile to ./wrapper, so a plain `make` leaves
+    # whichever ran last. Re-make the privileged one explicitly: the image is
+    # documented to run --privileged. Runs after the zip so the release is unchanged.
+    - name: Rebuild privileged wrapper for the image
+      run: cmake --build build --target wrapper_exe
+
+    - name: Compute image name
+      id: image
+      run: echo "name=${REGISTRY}/${GITHUB_REPOSITORY,,}" >> "$GITHUB_OUTPUT"
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Log in to GitHub Container Registry
+      if: github.event_name != 'pull_request'
+      uses: docker/login-action@v3
+      with:
+        registry: ${{ env.REGISTRY }}
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Extract image metadata
+      id: meta
+      uses: docker/metadata-action@v5
+      with:
+        images: ${{ steps.image.outputs.name }}
+        tags: |
+          type=ref,event=branch
+          type=ref,event=pr
+          type=sha,format=long
+          type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' }}
+
+    - name: Build and push Docker image (linux/amd64)
+      uses: docker/build-push-action@v6
+      with:
+        context: .
+        platforms: linux/amd64
+        push: ${{ github.event_name != 'pull_request' }}
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}