FROM golang:1.18.5 as builder

ARG GOOS="linux"
ARG GOARCH="amd64"

WORKDIR /workspace

COPY go.mod go.sum /workspace/

RUN go mod download

COPY . .
RUN CGO_ENABLED=0 go build -a -o hugo-mx-gateway


FROM alpine:3.16.2

ARG RUNTIME_USER="mxgateway"
ARG RUNTIME_USER_UID=4583

RUN apk update && apk add --no-cache ca-certificates

RUN addgroup -g $RUNTIME_USER_UID $RUNTIME_USER && \
    adduser --disabled-password --no-create-home --gecos "" \
    --home /app --ingroup $RUNTIME_USER --uid $RUNTIME_USER_UID  $RUNTIME_USER

WORKDIR /app

COPY --from=builder /workspace/hugo-mx-gateway .
COPY entrypoint.sh LICENSE /app/
COPY templates /app/templates

RUN chown -R $RUNTIME_USER:$RUNTIME_USER /app

ENTRYPOINT ["sh", "./entrypoint.sh"]