# builder
FROM golang:1.21.3-alpine3.18 AS builder

RUN apk update && apk add gcc musl-dev

ARG VERSION=notset-dockerfile

WORKDIR /usr/src/app

COPY go.mod go.sum ./
RUN go mod download && go mod verify

COPY . .

RUN --mount=type=cache,target=/root/.cache/go-build \
CGO_ENABLED=1 GOOS=linux go build -ldflags=-X=main.version=${VERSION} -v -o /felu ./*.go

# tester
FROM builder AS tester
RUN --mount=type=cache,target=/root/.cache/go-build go test -v ./...

# release
FROM alpine:3.18 AS release

COPY --from=builder /felu /felu
ADD ./static /static

RUN mkdir /var/felu

ENTRYPOINT ["/felu"]