# -------- Dockerfile (Multi-Stage Build) --------
# 1. Builder-Stage
FROM golang:1.24-alpine AS builder

WORKDIR /app
COPY go.* ./
RUN go mod download
COPY . .
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o /bin/virtualfileserver

# 2. Runtime-Stage
FROM alpine:3.22

# HTTPS-Callouts in Alpine brauchen ca-certificates
RUN apk add --no-cache ca-certificates
COPY --from=builder /bin/virtualfileserver /bin/virtualfileserver
# Default listens on :8090 – siehe main.go
EXPOSE 8080

# Environment defaults; können per compose überschrieben werden
ENV SERVE_DIR="." \
SERVE_ADDR=":8080" \
FORCE_ATTACHMENT="1"
    
ENTRYPOINT ["/bin/virtualfileserver"]