FROM golang:1.21-alpine AS builder

WORKDIR /app

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

# Copy source code
COPY . .

# Build
RUN CGO_ENABLED=0 GOOS=linux go build -o /app/virtual-banker-api ./main.go

# Final stage
FROM alpine:latest

RUN apk --no-cache add ca-certificates curl

WORKDIR /root/

COPY --from=builder /app/virtual-banker-api .

EXPOSE 8081

HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
  CMD curl -f http://localhost:8081/health || exit 1

CMD ["./virtual-banker-api"]