# Build
FROM golang:alpine AS build

RUN apk add --no-cache -U build-base git

RUN mkdir -p /src

WORKDIR /src

# Copy Makefile
COPY Makefile ./

# Install deps
RUN make deps

# Copy go.mod and go.sum and install and cache dependencies
COPY go.mod .
COPY go.sum .

# Download dependencies
RUN go mod download

# Copy sources
COPY *.go ./

# Version/Commit (there there is no .git in Docker build context)
# NOTE: This is fairly low down in the Dockerfile instructions so
#       we don't break the Docker build cache just be changing
#       unrelated files that actually haven't changed but caused the
#       COMMIT value to change.
ARG VERSION="0.0.0"
ARG COMMIT="HEAD"
ARG BUILD=""

# Build cli binary
RUN make cli VERSION=$VERSION COMMIT=$COMMIT BUILD=$BUILD

# Tools
FROM golang:alpine AS tools

RUN go install github.com/tdewolff/minify/v2/cmd/minify@latest
RUN go install go.mills.io/static/cmd/static@latest

# Runtime
FROM alpine:latest

RUN apk --no-cache -U add su-exec shadow

ENV PUID=1000
ENV PGID=1000

RUN addgroup -g "${PGID}" zs && \
    adduser -D -H -G zs -h /var/empty -u "${PUID}" zs && \
    mkdir -p /data && chown -R zs:zs /data

EXPOSE 8000/tcp

VOLUME /data

WORKDIR /data

COPY --from=build /src/zs /usr/local/bin/zs
COPY --from=tools /go/bin/minify /usr/local/bin/minify
COPY --from=tools /go/bin/static /usr/local/bin/static

COPY .dockerfiles/entrypoint.sh /init

ENTRYPOINT ["/init"]

CMD ["zs", "serve", "-b", "0.0.0.0:8000", "-r", "/data"]