FROM golang:1.23-bookworm AS builder
WORKDIR /app
COPY go.mod go.sum ./
RUN go mod download
COPY . .
# Buildx automatically injects TARGETARCH, TARGETOS, and TARGETPLATFORM as build args into the Dockerfile
ARG TARGETARCH
RUN CGO_ENABLED=0 GOOS=linux GOARCH=${TARGETARCH} go build -o go-weather .
FROM gcr.io/distroless/static-debian12
COPY --from=builder /app/go-weather /go-weather
EXPOSE 8080
ENTRYPOINT ["/go-weather"]