# syntax=docker/dockerfile:1
# Build stage
FROM golang:1.25-alpine AS builder
WORKDIR /app
COPY go.mod go.sum ./
ENV GOPROXY=https://goproxy.cn,direct
RUN go mod download
COPY . .
RUN --mount=type=cache,target=/root/.cache/go-build \
    --mount=type=cache,target=/go/pkg/mod \
    CGO_ENABLED=0 go build -o pr-helper .

# Runtime stage
FROM alpine:3.20
RUN apk add --no-cache ca-certificates tzdata
WORKDIR /app
COPY --from=builder /app/pr-helper .
COPY --from=builder /app/templates ./templates
COPY --from=builder /app/static ./static
VOLUME ["/app/data"]
EXPOSE 8080
CMD ["./pr-helper"]