Fixed docker image publish job (#7)

* Fixed image build and publish
* Disabled multi-arch image testing

.github/workflows/docker-image-push.yml

@@ -59,11 +59,10 @@ jobs:
       # Build and push Docker image with Buildx (don't push on PR)
       # https://github.com/docker/build-push-action
       - name: Build and push Docker image
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v4
         with:
           context: .
-          build-args: |
-            ARCH=amd64
+          platforms: linux/amd64,linux/arm64
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}

.github/workflows/staging-image-tester.yml

@@ -34,4 +34,4 @@ jobs:
         go get -v -t -d ./...
 
     - name: Test
-      run: make build.image/multiarch
+      run: make build.image

Dockerfile

@@ -24,6 +24,7 @@ COPY go.sum .
 RUN go mod download
 
 COPY . .
+RUN make build
 
 FROM alpine:3.18