Added github workflow for docker and dependabot (#946)

* 👷 Added github action to project

* 👷 Added github action to project

* 👷 Added github dependabot

* 👷 Added github dependabot and github workflow

* 👷 Added github dependabot and github workflow

.github/dependabot.yml

@@ -0,0 +1,10 @@
+version: 2
+updates:
+  - package-ecosystem: "gomod" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "daily"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"

.github/workflows/docker.yml

@@ -0,0 +1,47 @@
+name: Release KCPTUN
+
+on:
+  push:
+    tags:
+      - '*'
+  release:
+    types: [published]
+  workflow_dispatch:
+
+jobs:
+  build_and_push:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out the code
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/${{ github.repository }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: ${{ github.event_name != 'pull_request' }}
+          platforms: linux/amd64, linux/arm64/v8, linux/arm/v7, linux/arm/v6, linux/386
+          tags: |
+            ${{ steps.meta.outputs.tags }}
+            ghcr.io/${{ github.repository }}:latest
+          labels: ${{ steps.meta.outputs.labels }}