Dockerfile

# Build stage
FROM golang:1.21-alpine AS builder

WORKDIR /app

# Copy go mod files
COPY go.mod ./

# 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 main .

# Runtime stage
FROM alpine:latest

RUN apk --no-cache add ca-certificates

WORKDIR /app

# Copy binary from builder
COPY --from=builder /app/main .

# Copy static files, templates, and locales
COPY --from=builder /app/static ./static
COPY --from=builder /app/templates ./templates
COPY --from=builder /app/locales ./locales

# Create directory for data persistence
RUN mkdir -p /app/data

# Expose port (Render will set PORT env variable)
EXPOSE 8080

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