Revert "Add multi-platform Docker image support (#25)"

This reverts commit 9cbec4b.

Author: natikgadzhi

.github/workflows/docker.yml

@@ -28,7 +28,6 @@ jobs:
         uses: docker/build-push-action@v6
         with:
           context: .
-          platforms: linux/amd64,linux/arm64
           push: false
           tags: ${{ env.IMAGE_NAME }}:test
           cache-from: type=gha
@@ -65,7 +64,6 @@ jobs:
         uses: docker/build-push-action@v6
         with:
           context: .
-          platforms: linux/amd64,linux/arm64
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}