FROM golang:1.17.7-alpine3.15 as build
WORKDIR /build
RUN apk add --no-cache git gcc musl-dev
ADD go.mod go.sum ./
RUN go mod download
ADD . .
RUN go build -o gomodproxy cmd/gomodproxy/main.go && \
    chmod a+x gomodproxy

FROM golang:1.17.7-alpine3.15
WORKDIR /opt/app
RUN apk add --no-cache tzdata ca-certificates git
COPY --from=build /build/gomodproxy ./
CMD ["/opt/app/gomodproxy", "--addr", ":8080"]