build: use defacto image, build module for buildinfo

Building specific file doesn't appear to embed buildinfo into the static
binary for some reason.

Dockerfile

@@ -1,4 +1,5 @@
-FROM --platform=$BUILDPLATFORM golang:1.21-alpine as builder
+FROM --platform=$BUILDPLATFORM golang:1.21 as builder
+ENV CGO_ENABLED=0
 WORKDIR /src
 
 COPY go.mod go.sum ./
@@ -7,9 +8,9 @@ RUN go mod download
 COPY . .
 ARG TARGETOS
 ARG TARGETARCH
-RUN GOOS=$TARGETOS GOARCH=$TARGETARCH go build -trimpath -ldflags "-s -w" -a -o bin/wonderwall cmd/wonderwall/main.go
+RUN GOOS=$TARGETOS GOARCH=$TARGETARCH make wonderwall
 
-FROM gcr.io/distroless/static-debian11:nonroot
+FROM gcr.io/distroless/static-debian12:nonroot
 WORKDIR /app
 COPY --from=builder /src/bin/wonderwall /app/wonderwall
 ENTRYPOINT ["/app/wonderwall"]

Makefile

@@ -1,5 +1,5 @@
 wonderwall:
-	go build -trimpath -ldflags "-s -w" -a -o bin/wonderwall cmd/wonderwall/main.go
+	go build -trimpath -ldflags "-s -w" -a -o bin/wonderwall ./cmd/wonderwall
 
 run: fmt
 	go run cmd/wonderwall/main.go