Dockerfile

# Multi-stage build for Vite React + Go application

# Stage 1: Build React app
FROM node:18-alpine AS react-builder

WORKDIR /app

# Copy package files
COPY frontend/package*.json ./

# Install dependencies
RUN npm ci

# Copy source code
COPY frontend/ .

# Build the React app
RUN npm run build

# Stage 2: Build Go binary
FROM golang:1.21-alpine AS go-builder

WORKDIR /app

# Copy Go files
COPY backend/go.mod backend/main.go ./

# Download dependencies
RUN go mod download

# Build the Go binary
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o main .

# Stage 3: Final image
FROM alpine:latest

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

WORKDIR /root/

# Copy the React build from react-builder stage
COPY --from=react-builder /app/dist ./dist

# Copy the Go binary from go-builder stage
COPY --from=go-builder /app/main .

# Copy the pricing data JSON file
COPY backend/pricing_data.json .

# Expose port 8081
EXPOSE 8081

# Set environment variable for port
ENV PORT=8081

# Run the Go application
CMD ["./main"]