add files

Author: k.trufanov

.github/workflows/push-to-docker-hub.yml

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+name: Publish Docker image
+on:
+  release:
+    types: [published]
+jobs:
+  push_to_registry:
+    name: Push Docker image to Docker Hub
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v2
+      - name: Push to Docker Hub
+        uses: docker/build-push-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+          repository: ktrufanov/k8s-calico-networksets-controller
+          tag_with_ref: true

Dockerfile

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+FROM golang:1.15 AS builder
+
+WORKDIR $GOPATH/src/github.com/ktrufanov/k8s-calico-networksets-controller
+COPY . .
+RUN CGO_ENABLED=0 GOOS=linux go build -o /calico-networksets-controller calico-networksets-controller.go
+FROM alpine:latest
+COPY --from=builder /calico-networksets-controller /calico-networksets-controller
+
+CMD ["./calico-networksets-controller"]