chore(docker): update docker file, add ci support

update docker file, add ci support

Signed-off-by: mritd <mritd@linux.com>

.github/workflows/docker.yaml

@@ -0,0 +1,43 @@
+name: Build Docker Image
+
+on:
+  push:
+    branches:
+      - 'v*'
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out
+        uses: actions/checkout@v2
+
+      - name: Get tag
+        uses: olegtarasov/get-tag@v2
+        id: tagName
+
+      - name: Get time
+        uses: gerred/actions/current-time@master
+        id: current-time
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v1 
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          tags: tobyxdd/hysteria:latest,tobyxdd/hysteria:${{ env.GIT_TAG_NAME }}
+
+      - name: Image digest
+        run: echo ${{ steps.docker_build.outputs.digest }}