Use buildx instead :P

Author: e3ndr

.github/workflows/docker.yml

@@ -35,5 +35,5 @@ jobs:
 
       - name: Build Inventory Image
         run: |
-          docker build . --tag ghcr.io/casterlabs/tcp-proxy:latest
+          docker buildx build --platform=linux/amd64,linux/arm64/v8,linux/ppc64le,linux/s390x . --tag ghcr.io/casterlabs/tcp-proxy:latest
           docker push ghcr.io/casterlabs/tcp-proxy:latest