feat(build): add Dockerfile and github action for it

.github/workflows/docker.yml

@@ -0,0 +1,52 @@
+name: Docker Build
+
+on:
+  push:
+    branches:
+      - '*'
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+  GIT_TOKEN: ${{ secrets.GH_TOKEN }}
+
+jobs:
+  build-and-push:
+    runs-on:
+      labels: ubuntu-latest-large
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GH_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          file: Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          build-args: |
+            TAG=${{ github.ref_name }}

Dockerfile

@@ -0,0 +1,15 @@
+FROM golang:1.21 as builder
+
+WORKDIR /app
+
+COPY . .
+
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o attacknetd ./cmd/attacknet
+
+# Use a Docker multi-stage build to create a lean production image.
+# Start with a smaller image
+FROM alpine:latest  
+
+# Copy the binary and any other dependencies from the builder stage
+COPY --from=builder /app/attacknetd /usr/local/bin/attacknetd
+