FROM golang:1.26-alpine AS builder

# Set workdir
WORKDIR /lib/autocal

# Copy go modules
COPY go.mod go.sum ./
RUN go mod download

# Copy rest of source code
COPY . .

RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="-w -s" -o /lib/autocal/app .

# Final stage
FROM alpine:latest

RUN addgroup -S autocal_group && adduser -S autocal_user -G autocal_group
USER autocal_user

WORKDIR /lib/autocal

COPY --from=builder /lib/autocal/app .
COPY --from=builder /lib/autocal/credentials.json .

EXPOSE 4444

ENTRYPOINT ["/lib/autocal/app"]