# Build stage
FROM golang:1.21-alpine AS builder

WORKDIR /app

# Install dependencies
RUN apk add --no-cache git ca-certificates

# Copy go mod files
COPY go.mod go.sum* ./

# Download dependencies
RUN go mod download

# Copy source code
COPY . .

# Build the application
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o sdk-backend ./cmd/server

# Runtime stage
FROM alpine:3.19

WORKDIR /app

# Install ca-certificates for HTTPS
RUN apk add --no-cache ca-certificates tzdata

# Copy binary from builder
COPY --from=builder /app/sdk-backend .
COPY --from=builder /app/configs ./configs

# Create non-root user
RUN adduser -D -g '' appuser
USER appuser

# Expose port
EXPOSE 8085

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD wget --no-verbose --tries=1 --spider http://localhost:8085/health || exit 1

# Run the application
CMD ["./sdk-backend"]