add github ci

.github/workflows/push.yml

@@ -0,0 +1,34 @@
+---
+on:
+  release:
+    types:
+      - created
+
+jobs:
+  multi-arch-build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - 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: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Prepare release tag
+        id: tag
+        run: echo ::set-output name=version::${GITHUB_REF#refs/tags/v}
+      - name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ./Dockerfile
+          platforms: linux/amd64
+          push: true
+          tags: |
+            containeroo/cert-manager-webhook-bluecat:latest
+            containeroo/cert-manager-webhook-bluecat:${{ steps.tag.outputs.version }}

Dockerfile

@@ -13,12 +13,12 @@ FROM build_deps AS build
 
 COPY . .
 
-RUN CGO_ENABLED=0 go build -o webhook -ldflags '-w -extldflags "-static"' .
+RUN CGO_ENABLED=0 go build -o bluecat-webhook -ldflags '-w -extldflags "-static"' .
 
 FROM alpine:3.9
 
 RUN apk add --no-cache ca-certificates
 
-COPY --from=build /workspace/webhook /usr/local/bin/webhook
+COPY --from=build /workspace/bluecat-webhook /usr/local/bin/bluecat-webhook
 
-ENTRYPOINT ["webhook"]
+ENTRYPOINT ["bluecat-webhook"]