FROM golang:1.21-bullseye AS builder

# Set working directory
WORKDIR /app

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

# Download dependencies
RUN go mod download

# Copy the source code
COPY . .

# Build the application
RUN CGO_ENABLED=0 GOOS=linux go build -o bebank-server main.go

# Use a smaller base image for the final image
FROM alpine:3.18

# Add CA certificates for HTTPS support
RUN apk --no-cache add ca-certificates

WORKDIR /app

# Copy the binary from the builder stage
COPY --from=builder /app/bebank-server .
# Copy any static files or configurations
COPY --from=builder /app/.env .
COPY --from=builder /app/public ./public

# Expose port
EXPOSE 7860

# Set environment variables
ENV PORT=7860
ENV HOST=0.0.0.0
ENV GIN_MODE=release

# Run the binary
CMD ["./bebank-server"]