ci: add docker build workflow

.github/workflows/docker-build.yml

@@ -0,0 +1,53 @@
+name: Docker Build and Push
+
+on:
+  push:
+    tags: [ "v*" ]
+  workflow_dispatch:
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_HUB_USERNAME }}
+          password: ${{ secrets.DOCKER_HUB_TOKEN }}
+      
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          driver-opts: network=host
+      
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          platforms: linux/amd64,linux/arm64
+          tags: |
+            ${{ secrets.DOCKER_HUB_USERNAME }}/streamcap:latest
+            ${{ secrets.DOCKER_HUB_USERNAME }}/streamcap:${{ github.sha }}
+            ${{ github.ref == 'refs/heads/main' && format('{0}/streamcap:edge', secrets.DOCKER_HUB_USERNAME) || '' }}
+            ${{ startsWith(github.ref, 'refs/tags/') && format('{0}/streamcap:{1}', secrets.DOCKER_HUB_USERNAME, github.ref_name) || '' }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+      
+      - name: Notify build status
+        if: always()
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const status = ${{ job.status }}
+            const message = status === 'success' ? 
+              'Docker image built successfully!' : 
+              'Docker image build failed, please check logs.'
+            github.rest.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: message
+            })