Added github actions to build and publish docker image

.github/workflows/docker-build-and-release.yml

@@ -0,0 +1,38 @@
+name: ci
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Set up environment
+        run: echo "OPENCVE_VERSION=${GITHUB_REF##*/}" | sed 's/=v/=/' >> $GITHUB_ENV
+      -
+        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: ${{ secrets.DOCKERHUB_TOKEN }}
+      -
+        name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          build-args: |
+            OPENCVE_VERSION=${{ env.OPENCVE_VERSION }}
+          context: .
+          push: true
+          tags: opencve/opencve:${{ env.OPENCVE_VERSION }}
+