better

Dockerfile

@@ -1,4 +1,6 @@
 # UI build stage
+ARG TARGETOS
+ARG TARGETARCH
 FROM node:alpine AS ui-builder
 
 WORKDIR /app
@@ -8,7 +10,7 @@ COPY otel-ui/ .
 RUN npm install && npm run build
 
 # Go build stage
-FROM golang:1.25-alpine AS go-builder
+FROM --platform=$BUILDPLATFORM golang:1.25-alpine AS go-builder
 
 WORKDIR /app
 
@@ -21,7 +23,7 @@ COPY internal/ ./internal
 # Copy built UI dist
 COPY --from=ui-builder /app/dist ./otel-ui/dist
 
-RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -installsuffix cgo -o /go-otel ./cmd/server
+RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -a -installsuffix cgo -o /go-otel ./cmd/server
 
 # Final stage
 FROM alpine:latest