Multi arch

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.23.2-alpine AS builder
+FROM --platform=$BUILDPLATFORM golang:1.23.2-alpine AS builder
 
 WORKDIR /app
 
@@ -19,14 +19,22 @@ RUN mkdir -p /app/public/css
 
 # Generate assets and build with optimizations
 SHELL ["/bin/bash", "-c"]
+
+# Platform-specific builds
+ARG TARGETPLATFORM
 RUN cd /app && make generate && \
-    CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \
+    case "${TARGETPLATFORM}" in \
+    "linux/amd64") GOARCH=amd64 ;; \
+    "linux/arm64") GOARCH=arm64 ;; \
+    *) GOARCH=amd64 ;; \
+    esac && \
+    CGO_ENABLED=0 GOOS=linux GOARCH=${GOARCH} go build \
     -ldflags='-s -w -extldflags "-static"' \
     -tags netgo,osusergo \
     -o /go/bin/app
 
 # Final stage
-FROM scratch
+FROM --platform=$TARGETPLATFORM scratch
 
 # Copy static files and assets
 COPY --from=builder /app/public/css/styles.css /public/css/styles.css